Nylon vs Polyester: Which Fabric Is Better?
Nylon and polyester are the two most common synthetic fabrics, but they have very different strengths. This guide compares them across every important dimension so you can choose the right one for your project.
Head-to-Head Comparison
| Property | Nylon | Polyester | Winner |
|---|---|---|---|
| Tensile Strength | 4-8 g/denier | 2.5-5 g/denier | Nylon |
| Abrasion Resistance | Excellent; best of any common textile | Very good; second best | Nylon |
| UV Resistance | Poor; degrades in direct sunlight | Excellent; UV-stabilized grades available | Polyester |
| Water Resistance | Absorbs 4% water by weight | Absorbs 0.4% water by weight | Polyester |
| Moisture Wicking | Moderate; absorbs moisture | Excellent; dries very fast | Polyester |
| Breathability | Low; traps heat | Moderate; more breathable weaves | Polyester |
| Elastic Recovery | Excellent; returns to shape | Good; some stretch, less recovery | Nylon |
| Melting Point | 430F (220C) | 482F (250C) | Polyester |
| Chemical Resistance | Good; attacked by strong acids | Excellent; resists most chemicals | Polyester |
| Cost | More expensive | Generally cheaper | Polyester |
When to Choose Nylon
Nylon is the right choice when strength and durability matter most. It was invented in 1935 by Wallace Carothers at DuPont as a silk replacement, and remains the go-to for applications that demand toughness:
- Outdoor gear - Backpacks, climbing ropes, tents, and sleeping bags benefit from nylon's exceptional abrasion resistance and tensile strength
- Activewear - Yoga pants, leggings, and swimwear use nylon's elastic recovery to maintain shape after repeated stretching
- Umbrellas - Lightweight nylon with a waterproof coating is the standard umbrella material
- Fishing line - Monofilament nylon line dominates because of its strength, flexibility, and near-invisibility in water
- Kite fabric - Ripstop nylon is the preferred material for kites and lightweight tents
Downside: Nylon degrades in sunlight (UV exposure reduces strength by 30-50% over months), absorbs more water, and is more expensive than polyester.
When to Choose Polyester
Polyester wins for outdoor, moisture-prone, and budget-conscious projects. Developed in 1941, it became the world's most-produced synthetic fiber for good reasons:
- Outdoor furniture - UV-resistant polyester lasts years in direct sunlight without fading or weakening
- Sportswear - Polyester's moisture-wicking and quick-drying properties make it the standard for athletic jerseys, running shirts, and hiking pants
- Rainwear - Its low water absorption (0.4%) means it does not get heavy when wet. Ideal for rain jackets with a DWR coating
- Curtains and drapery - UV resistance and dimensional stability make it perfect for window treatments
- Home decor - Pillows, cushions, and upholstery fabrics in polyester resist fading from window light
- Industrial uses - Conveyor belts, seat belts, tire cord, and geotextiles rely on polyester's strength and chemical resistance
Downside: Less abrasion-resistant than nylon, lower tensile strength, and less elastic recovery (wears out shape faster under repeated stretch).
Application-by-Application: Which Fabric to Choose
Different projects demand different properties. Here is a quick-reference guide for the most common uses:
| Application | Choose | Why |
|---|---|---|
| Outdoor cushions / patio furniture | Polyester | UV resistance prevents fading; low water absorption prevents mildew |
| Backpack / climbing gear | Nylon | Abrasion resistance is 2x better; higher tensile strength |
| Rain jacket | Polyester | Dries faster; doesn't absorb water; works better with DWR coatings |
| Yoga pants / leggings | Nylon (blend) | Superior elastic recovery maintains shape through repeated stretch |
| Running shirt / activewear | Polyester | Moisture-wicking + quick-drying; lighter when wet |
| Swimwear | Nylon (w/ spandex) | Elastic recovery + abrasion resistance for long wear life |
| Curtains / drapery | Polyester | UV resistant; dimensional stability; won't sag over time |
| Tent / camping shelter | Nylon | Strength-to-weight ratio; packs smaller |
| Fishing line | Nylon | Flexibility + near-invisible in water + good knot strength |
| Work uniform / industrial | Polyester blend | Chemical resistance + lower cost + easier care |
Care and Maintenance Comparison
How you wash, dry, and store nylon vs polyester affects their lifespan:
| Care Factor | Nylon | Polyester |
|---|---|---|
| Wash temperature | Cold or warm (max 40°C / 105°F) | Warm or hot (max 60°C / 140°F) |
| Bleach | Do not use chlorine bleach (weakens fibers) | Non-chlorine bleach OK in moderation |
| Tumble dry | Low heat only; high heat causes shrinkage | Medium heat safe; low shrink risk |
| Ironing | Low temp (max 150°C / 300°F) | Medium temp (max 180°C / 355°F) |
| Dry cleaning | Safe | Safe |
| Fabric softener | Avoid (reduces moisture-wicking) | Avoid (coats fibers) |
| Sun drying | Avoid direct sunlight (UV damage) | Safe in sunlight |
| Pilling resistance | Good (smooth fibers) | Moderate (can pill over time) |
| Stain resistance | Moderate (absorbs oils) | Good (oil-resistant) |
Environmental Impact
Both fabrics are petroleum-based synthetics with similar environmental concerns, but there are important differences:
- Production energy — Polyester requires about 30% less energy to produce than nylon. Nylon production also emits N₂O (a potent greenhouse gas).
- Microplastic shedding — Both shed microplastics during washing. The difference is minimal — about 0.1–0.3% of garment weight per wash for both.
- Recyclability — Polyester is widely recycled (rPET, recycled bottles). Nylon recycling exists but is less common. Look for ECONYL® (regenerated nylon from ocean waste).
- Biodegradation — Neither biodegrades in landfill conditions. Both persist for 30–40+ years.
- Durability offset — Nylon's longer lifespan in high-wear applications means less frequent replacement, which can offset its higher production impact.
For the most eco-friendly choice: buy recycled polyester (rPET) for UV-exposed applications, or recycled nylon (ECONYL®) for high-wear items. Wash both in a Guppyfriend bag to reduce microplastic pollution.
Price Comparison (2026)
Fabric prices vary by weave, weight, and finish, but general ranges are:
| Fabric Type | Nylon (per yard) | Polyester (per yard) | Difference |
|---|---|---|---|
| Basic lining fabric (45") | $4–7 | $3–5 | Polyester ~25% cheaper |
| Ripstop (60") | $8–15 | $5–10 | Polyester ~35% cheaper |
| Outdoor/canvas (54") | $12–20 | $8–14 | Polyester ~30% cheaper |
| Performance activewear knit | $10–18 | $7–12 | Polyester ~25% cheaper |
| Recycled / eco (60") | $14–22 (ECONYL®) | $8–15 (rPET) | Both premium over virgin |
For a typical sofa upholstery project (10–14 yards), polyester saves $30–100. For a single jacket (2–3 yards), the savings are $5–15. See the fabric cost calculator for exact project budgeting.
Key Differences at a Glance
Durability: Nylon Wins
Nylon is 20-40% stronger than polyester in tensile strength and has the highest abrasion resistance of any common textile fiber. If your project will see hard wear, nylon lasts longer.
Sunlight Resistance: Polyester Wins
Polyester resists UV degradation much better than nylon. Nylon can lose half its strength after 6 months of direct sun exposure. Polyester with UV stabilizers maintains 80%+ strength after the same period.
Water and Moisture: Polyester Wins
Polyester absorbs almost no water (0.4%), dries faster, and resists mildew. Nylon absorbs 10x more water (4%), making it heavier when wet and slower to dry.
Stretch and Recovery: Nylon Wins
Nylon has superior elastic recovery. It snaps back to shape after stretching. This is why nylon is preferred for elastic fabrics, hosiery, and fitted activewear that needs to maintain shape.
Cost: Polyester Wins
Polyester is generally 20-30% cheaper than nylon for comparable weights and weaves. For large projects where budget matters, polyester is the economical choice.
Can Nylon and Polyester Be Mixed?
Yes, nylon-polyester blends are common in performance fabrics. A typical blend might be 65% polyester and 35% nylon. The polyester provides UV resistance, quick drying, and lower cost, while the nylon adds strength, abrasion resistance, and stretch recovery. These blends are popular in hiking pants, work uniforms, and performance outerwear.