Linen vs. Cotton vs. Wool: Cross-Fiber Comparison
Natural Fibers Research — Reference tables — Updated May 2026
These tables distil the main findings from the four dossiers in this research library into a single side-by-side view. The goal is quick scanning, not exhaustive detail; follow the source links to the individual topic pages for caveats, study citations, and historical context. Where data is contested or industry-sourced, the cell notes this. Where a cell contains a range rather than a single number, it is because the correct answer depends on farming system, processing method, product tier, or all three.
1. At a Glance
| Attribute | Linen | Cotton | Wool |
|---|---|---|---|
| Fiber source | Bast fiber from the flax plant stem (Linum usitatissimum)[L] | Seed-hair fiber from bolls of Gossypium spp.; nearly pure cellulose (~91%)[C] | Protein (keratin) fiber shorn from sheep fleece[W] |
| Earliest domestication | ~9,000 years ago, Fertile Crescent (Tell Ramad, Syria)[L] | Multiple independent domestications; Old World ~6th millennium BCE (Mehrgarh, Pakistan); New World 7th–6th millennia BCE (Nanchoc Valley, Peru)[C] | Selective breeding for woolly fleece from Asian mouflon; woolly phenotype established ~6,000–4,000 BCE in Near East[W] |
| Dominant historical region | Ancient Egypt; medieval Flanders and Ireland; 19th-century Russia (80% of world fiber flax)[L] | Mughal India; 19th-century American South (slavery-backed plantation system); modern: India and China (~45–50% of world output)[C] | Medieval England (raw wool exports); Spain (Merino monopoly, 15th–18th c.); modern: Australia (~25% of world production)[W] |
| Main modern uses | Bed linens, table linens, kitchen/tea towels, warm-weather clothing, suiting; premium household textiles | Clothing of all types; sheets and pillowcases; bath towels (terry weave); the dominant natural fiber in most apparel worldwide | Cold-weather clothing (base layers, sweaters, suits); blankets; specialty uses (aircraft seating, firefighter gear) for flame resistance |
| Main caveat for buyers | Wrinkles significantly; higher up-front cost; "antibacterial" marketing claims not supported by independent science[L] | Water-intensive in cultivation; "Egyptian cotton" and high thread-count labels are widely fraudulent; large environmental footprint if irrigated[C] | Felts irreversibly if washed incorrectly; coarse grades (>30 microns) cause skin prickling; superwash polymer coating reduces biodegradability[W] |
2. Fiber Properties
| Property | Linen | Cotton | Wool |
|---|---|---|---|
| Moisture regain (standard conditions: 65% RH, 20°C) | ~10–12%[1] | ~7–8.5%[1] | ~13–18%[1] |
| Maximum absorption before feeling damp | ~20% of dry weight (commonly stated; primary source for exact figure not located)[L] | Can hold 8–27 times its own weight in water (structure-dependent)[C] | Up to ~33% of own weight before feeling wet[W] |
| Tensile strength (dry) | Highest of the three: up to ~3× stronger than cotton; increases ~20% when wet[L] | Mid-range; long-staple (ELS) substantially stronger than short-staple; strength decreases ~20% when wet[C] | Lowest of the three; fine Merino is especially susceptible to abrasion; strength decreases when wet[W] |
| Abrasion resistance | Good in woven form; susceptible to breakage at repeated sharp crease points[L] | Good to excellent in tight weaves; short-staple pills more readily than long-staple[C] | Moderate; fine Merino knitwear pills and abrades more readily than worsted wool[W] |
| Elastic recovery | Very low (essentially inelastic); wrinkles and creases persistently[L] | Low; better than linen but far lower than wool; recovers from mild deformation[2] | High; crimp structure gives wool significant stretch and recovery; resists wrinkles and holds shape[W] |
| Prickle / skin feel | Smooth at the fiber level; new linen feels stiff and slightly rough but softens with washing; no keratin, so no wool-type prickling[L] | Soft; short-staple can pill and feel rougher over time; no prickling; generally the softest of the three new from the bolt[C] | Depends entirely on fiber diameter: <~30 microns (fine Merino, ~17–22 microns) does not prickle; >30 microns (many upland breeds) does[W] |
| Fiber diameter (typical) | 12–16 microns[L] | 11–22 microns (variety-dependent)[2] | 15–40 microns depending on breed: Merino 15–24; Shetland ~23–27; Romney ~30–35[W] |
| Fiber type | Cellulosic (plant bast) | Cellulosic (seed hair) | Proteinaceous (keratin) |
3. Thermal Behavior
| Property | Linen | Cotton | Wool |
|---|---|---|---|
| Thermal conductivity | Highest of the three (~0.054 W/m·K); conducts heat away from skin rapidly — the mechanism behind "cool to touch"[HT] | Moderate (~0.040 W/m·K); less conductive than linen, more than wool[HT] | Low; crimped fiber traps air pockets, providing insulation; warms rather than cools[W] |
| Summer / warm-weather performance | Excellent: wicks sweat, releases it rapidly, feels cool to touch; most recommended natural fiber for hot climates[L] | Good: absorbs sweat well but retains moisture longer than linen; can feel clammy when saturated; percale weave outperforms sateen[HT] | Poor in high heat unless very light Merino; excess moisture retention and insulation make it uncomfortable above ~20–22°C for most activities[W] |
| Winter / cold-weather performance | Poor alone: high conductivity loses heat; needs layering or blending with wool/cotton for warmth[L] | Moderate: poor insulator without bulk; acceptable as a mid-layer; relies on thickness rather than fiber properties for warmth[2] | Excellent: entrapment of air by crimped fiber provides genuine insulation; wool retains warmth even when damp, unlike cotton[W] |
| Sweat / moisture handling | Wicks rapidly; dries rapidly; sweat does not accumulate at skin surface; linen towels dry 30–45 min vs. 2–4 hr for cotton terry (trade source, fiber physics supports this)[HT] | Absorbs heavily (can hold 8–27x its weight in water); slow to release; stays wet longer; good for toweling applications but clammy in active wear[C] | Buffers moisture vapor without wicking; exothermic absorption keeps wearer warm when wet; worn garment can be re-worn more times than cotton before odor develops[W] |
| "Cool to touch" sensation | Yes, distinctively: rapid heat conduction from skin surface[L] | Slight; less pronounced than linen[2] | No; wool feels neutral to warm against skin[W] |
| Flame resistance | Burns in open air (LOI ~18–19%, similar to cotton); no natural flame resistance[2] | Burns readily in open air (LOI ~18–19%); does not melt or drip, which is a safety advantage over synthetics[C] | Best of the three: LOI ~25%; self-extinguishing char; does not melt or drip; meets aviation and furniture flammability standards without chemical treatment[W] |
4. Care and Maintenance
| Care aspect | Linen | Cotton | Wool |
|---|---|---|---|
| Recommended wash temperature | White/undyed: up to 60°C; colored: 40°C or lower to prevent fading[L] | Cold (20–30°C) adequate for routine cleaning with modern detergents; 60°C for sanitation (bedding, towels); hot wash accelerates color fading and fiber degradation[C] | 30°C maximum, low agitation (wool/delicate cycle); standard biological / enzyme detergents damage keratin; superwash wool only for machine washing at standard cycles[W] |
| Drying method | Hang or lay flat to dry; tumble-dry only to damp then air-finish to avoid brittleness; dries faster than cotton[L] | Hang dry preferred; tumble dry on low heat acceptable; avoid over-drying, which causes shrinkage and fiber degradation[C] | Lay flat to dry; never hang wet (stretches under gravity while scales are softened); superwash wool only in tumble dryer (low heat)[W] |
| Ironing | Required for smooth appearance: ~200–230°C, must be ironed damp; skipping ironing leaves persistent wrinkles[L] | Recommended for formal use; iron at ~200°C (cotton setting); irons easily damp; percale easier to iron than sateen[C] | Medium heat with damp pressing cloth; direct high heat scorches keratin; use steam and a cloth barrier; blocking (reshaping damp) is the main shaping method[W] |
| Shrinkage risk | Moderate: first-wash shrinkage 3–5% common in unlaundered linen; quality producers pre-wash[L] | 3–10% shrinkage in untreated cotton after first wash; Sanforization reduces this to under 1%; most quality garments are pre-shrunk[C] | Felting (irreversible matting and shrinkage) from heat + agitation + wrong pH; can shrink 30%+ in a single hot wash; superwash treatment prevents felting[W] |
| Pest / storage risk | No keratin: immune to clothes moths and carpet beetles; risk is mildew if stored damp[L] | Immune to clothes moths; mildew risk within 24–48 hours if stored damp in warm conditions[C] | Clothes moths (Tineola bisselliella) larvae eat keratin; sealed storage, freezing, or cedar/lavender required; laundering before storage is essential[W] |
| Lifespan with good care | Household textiles: 20–30 years, documented heirloom pieces 50+ years; garments 10–15 years[L] | Long-staple woven: 10–15 years for garments; towels 8–12 years; short-staple commodity cotton: 2–4 years[C] | Worsted suits and Harris Tweed: 15–30+ years; Merino knitwear: 10–15 years if carefully maintained; wool blankets: 20–50+ years[W] |
| Characteristic failure mode | Thread breakage at repeated sharp crease lines; weakening at collar folds, hem lines, iron creases[L] | Pilling (short-staple); color fading; fiber thinning in high-friction areas; mildew from improper storage[C] | Felting (if machine-washed incorrectly); moth damage (if stored without protection); pilling in knitwear (manageable with fabric shaver)[W] |
5. Environmental Footprint
| Factor | Linen | Cotton | Wool |
|---|---|---|---|
| Water use in cultivation | Low to moderate: temperate flax grown in northern France/Belgium relies largely on rainfall; irrigation atypical[L] | High and highly variable: global average ~1,500–2,500 liters per kg of fiber (the "2,700 liters per t-shirt" figure is a frequently cited global average); can exceed 22,500 L/kg in arid irrigated regions (e.g., Aral Sea basin)[C] | High land use per kg fiber; water for pasture and scouring; total water footprint contested and varies strongly by region and farming system[W] |
| Pesticide intensity | Low: flax requires few pesticides in European temperate cultivation[L] | High: conventional cotton uses a disproportionate share of global insecticide relative to its crop area (commonly cited at 10–16% of global pesticide use on ~2.5% of arable land; primary source not definitively located, likely FAO/UNEP 1990s–2000s data). Bt cotton adoption since 2002 has reduced insecticide use significantly in the US, India, and China[C] | Moderate: sheep dips historically involved organophosphate and synthetic pyrethroid compounds; modern alternatives vary by region; low relative to cotton[W] |
| Land use per kg fiber | Moderate: flax has reasonable yields per hectare in temperate climates[3] | Moderate: cotton yields vary widely (400–1,800 kg/ha lint depending on variety, irrigation, and inputs)[C] | High: sheep require extensive pasture; land footprint per kg of clean wool fiber is high relative to crop-based fibers[W] |
| Greenhouse gas / methane | Low in cultivation; main impacts in processing (retting, bleaching, dyeing)[L] | Low in cultivation (no enteric methane); main impacts in irrigation energy, gin electricity, and synthetic fertilizer application[C] | Significant enteric methane from ruminant digestion; commonly cited at ~20–30 kg CO2e per kg clean wool (contested — see wool.html); carbon sequestration in managed pasture partially offsets this, but evidence is mixed[W] |
| Microplastic shedding vs. synthetics | Sheds cellulosic (biodegradable) fibers only; no synthetic microplastic contribution from untreated linen[L] | Sheds biodegradable cellulosic fibers; cotton-polyester blends shed non-biodegradable microfibers from the polyester fraction[C] | Untreated wool: biodegradable protein microfibers only. Superwash-treated wool: releases polymer (polyamide-epichlorohydrin) microfibers during washing[W] |
| Biodegradability | Yes: cellulosic; decomposes in soil. Chemical finishes (resin anti-wrinkle treatments, synthetic dyes) reduce this[L] | Yes: cellulosic; decomposes in soil. Synthetic blends, dyes, and finishes complicate end-of-life[C] | Yes (untreated): protein fiber degrades in aerobic soil within 1–2 years, releasing nitrogen and sulfur. Superwash polymer coating persists; reduces biodegradability significantly[W] |
| End-of-life options | Compost; rag use; textile recycling. No animal-protein component, so no moth concern in storage of rags[L] | Compost; rag quilts; textile recycling. Cotton is the most infrastructure-supported natural fiber for take-back programs due to volume[C] | Compost; garden mulch; insulation (sheep-fleece home insulation products exist in the UK). Resale and secondhand market is strongest of the three[W] |
6. Cost — Typical Price Ranges by Item (2025–2026)
All prices are approximate consumer retail in USD, US market. Prices vary significantly by country of sale, certification, and brand. "Entry" means lowest credible quality for that fiber category (not fast-fashion blends). "Mid" means established brands with verifiable fiber sourcing. "Heirloom" means the upper tier: certified origin, heritage production, or notable durability characteristics.
| Item | Tier | Linen | Cotton | Wool |
|---|---|---|---|---|
| Single shirt / blouse | Entry | $30–$80[L] | $15–$40 (standard staple)[C] | Not typically a shirt fiber at entry; light Merino tee $50–$80[W] |
| Mid | $80–$200[L] | $40–$100 (ring-spun long-staple Pima/Supima)[C] | $80–$200 (Merino shirt/base layer, quality brand)[W] | |
| Heirloom | $200–$500+[L] | $100–$300+ (verified Egyptian ELS or Sea Island)[C] | $300–$800+ (superfine Merino shirting; bespoke suiting fabric starts higher)[W] | |
| Queen sheet set (flat + fitted + 2 pillowcases) | Entry | $50–$150[L] | $20–$80 (commodity percale or sateen)[HT] | Wool sheets uncommon; merino jersey sheet sets from specialty brands: $150–$300+[W] |
| Mid | $150–$400[L] | $80–$200 (long-staple certified percale)[HT] | $250–$500 (merino jersey, quality NZ/AU brand)[W] | |
| Heirloom | $300–$800+[L] | $200–$600 (verified ELS Egyptian cotton, traceable mill)[HT] | $500+ (rare; not a mainstream category)[W] | |
| Bath towel (single) | Entry | $15–$30[HT] | $5–$20 (standard terry)[HT] | Not a standard category; wool hand towels from specialty producers: $30–$60[W] |
| Mid | $30–$60[HT] | $20–$60 (Turkish/Egyptian long-staple terry)[HT] | $60–$120 (specialty wool terry or waffle, uncommon)[W] | |
| Heirloom | $60–$120[HT] | $50–$120 (heavy GSM, certified long-staple)[HT] | $100–$200+ (if available; niche market)[W] | |
| Blanket / throw (single or double bed) | Entry | Linen blankets uncommon; lightweight summer throws: $40–$100 | Waffle-weave cotton blanket: $30–$80[HT] | $80–$200 (domestic wool blanket)[HT] |
| Mid | $80–$200 | $60–$150[HT] | $150–$350 (quality British or NZ wool blanket)[HT] | |
| Heirloom | $150–$350 (fine woven linen coverlet) | $100–$300[HT] | $200–$500+ (Harris Tweed throw; Hudson's Bay point blanket; heavy Witney-tradition wool)[HT] |
Cost per year of use (illustrative)
When lifespan is factored in, linen and wool heirloom items frequently match or undercut mid-range cotton on an annual cost basis. A $400 linen sheet set lasting 25 years costs ~$16/year. A $90 mid-range cotton set lasting 7 years costs ~$13/year. A $150 wool blanket lasting 30 years costs $5/year; a $60 cotton blanket lasting 10 years costs $6/year. The calculation favors quality natural fibers when care is consistently applied. The barrier is front-loaded cost and the discipline required to maintain higher-maintenance items (especially wool).[HT]
7. When Each Fiber Wins
Linen
Linen wins in hot, humid conditions and in items washed frequently at moderate-to-high temperatures. It is the right choice for bed sheets in warm climates, kitchen and tea towels where lint-free drying matters, summer clothing that will be worn and washed often, and household textiles intended to last 20+ years. It is also the best choice where you need a natural fiber that tolerates vigorous washing (60–90°C) without degrading. Its wrinkle-prone nature is a genuine limitation for formal use unless regular ironing is acceptable.
Cotton
Cotton wins on accessibility, softness, and versatility. It is the correct choice for terry bath towels (no other natural fiber competes in pile-weave water capacity), for everyday clothing across all temperatures, and for anyone unwilling to invest in the care rituals that linen and wool require. Long-staple ring-spun cotton (Pima, Supima, verified ELS) punches well above commodity cotton in durability and feel for a modest price premium. Cotton is also the default choice for any use case where the fabric will be machine-washed carelessly; it tolerates more abuse than the alternatives.
Wool
Wool wins in cold conditions, in items worn infrequently and laundered rarely, and wherever fire resistance matters. It is the right choice for blankets, outer garments, and suiting that will be maintained with brushing and dry cleaning rather than frequent washing. Fine Merino (under ~22 microns) is the only natural fiber that works genuinely well as an athletic base layer across a range of temperatures. Wool is also the fiber with the most credible heirloom economics: a well-made wool blanket or tweed jacket can outlast everything else in this comparison. Moth protection and correct washing (gentle cycle, cool water, enzyme-free detergent) are non-negotiable requirements.
Sources and Cross-References
Each cell in the tables above is sourced to one of the four topic pages in this library, where primary literature citations can be found. The shorthand footnotes used throughout are:
- [L] — linen.html: full sources for linen fiber properties, history, environmental LCA, care, and cost.
- [C] — cotton.html: full sources for cotton fiber properties, history (including slavery and Aral Sea), water footprint, Bt cotton, organic cotton, and cost.
- [W] — wool.html: full sources for wool fiber biology, prickle threshold, moisture buffering, mulesing, superwash, methane footprint, and cost.
- [HT] — household-textiles.html: full sources for thermal conductivity values, towel drying times, kitchen-towel hygiene studies, blanket CLO data, thread-count analysis, and household cost-per-use calculations.
The following standard reference data appears in multiple cells and is cited by number below:
- [1] Morton, W.E. and Hearle, J.W.S. (2008). Physical Properties of Textile Fibres, 4th ed. Woodhead Publishing. — Standard industry reference for moisture regain values at standard conditions: linen ~10–12%, cotton ~7–8.5%, wool ~13–18%. The ASTM standard test method is D2654 (moisture in textiles). The Morton-Hearle values are the most widely cited single reference for standard-condition moisture regain across fiber types.
- [2] Kadolph, S.J. (2010). Textiles, 11th ed. Pearson. — Standard university textile science textbook; source for cotton fiber diameter ranges, elastic recovery comparisons, LOI values for cotton and linen, and weave-structure descriptions (percale vs. sateen). Used where a cell requires a foundational textile property reference for linen or cotton not specific to a single dossier.
- [3] van der Werf, H.M.G. and Turunen, L. (2008). "The environmental impacts of the production of hemp and flax textile yarn." Industrial Crops and Products, Elsevier. Cited ~236 times as of 2025. — LCA providing comparative land and water data for flax fiber production. Primary peer-reviewed source for flax cultivation environmental claims.
- [4] De Falco, F., Di Pace, E., Cocca, M., and Avella, M. (2019). "The contribution of washing processes of synthetic clothes to microplastic pollution." Scientific Reports 9, 6633. DOI: 10.1038/s41598-019-43023-x. — Microfiber shedding per wash for synthetic fabrics (polyester: up to 729,000 fibers per 6-kg load). Referenced when comparing natural vs. synthetic fiber shedding profiles.
- [5] Napper, I.E. and Thompson, R.C. (2016). "Release of Synthetic Microplastic Plastic Fibres from Domestic Washing Machines: Effects of Fabric Type and Washing Conditions." Marine Pollution Bulletin 112(1–2), pp. 39–45. DOI: 10.1016/j.marpolbul.2016.09.025. — Fiber type comparison for microplastic release; acrylic highest, followed by polyester; natural fibers shed biodegradable cellulosic or protein fibers only.
- [6] Horrocks, A.R. (1986). "Flame retardant finishing of textiles." Review of Progress in Coloration 16, pp. 62–101. — Source for limiting oxygen index (LOI) values: wool ~25%, cotton ~18–19%, linen similar to cotton. Standard reference for natural-fiber flame resistance comparisons.
- [7] Hoekstra, A.Y. and Chapagain, A.K. (2007). "Water footprints of nations: Water use by people as a function of their consumption pattern." Water Resources Management 21(1): 35–48. — Origin of the widely cited "2,700 liters per cotton t-shirt" global average figure. Important caveat: the figure blends green water, blue water, and grey water; the blue-water (depletion) component varies enormously by region and farming system, and the figure should not be applied to rain-fed cotton.