Coreloft

Arc'teryx's proprietary synthetic insulation using crimped multi-denier siliconized polyester fibers. Designed for high loft, excellent warmth, and compressibility in technical outerwear.

Score Breakdown

68/100

Durability68

Comfort72

Breathability58

Warmth84

Moisture Wicking48

Sustainability32

Care Ease68

Best For

🧥Winter Outerwear

Good

Good warmth (84) for cold weather

👕Everyday Casual

Good

Good comfort (72) and care ease (68) for casual wear

👔Formal/Office

Good

Good durability (68) and comfort (72) for office wear

⛰️Outdoor/Hiking

Good

Good durability (68) and breathability (58) for outdoor activities

Detailed Use Case Scores

outdoor90

outerwear85

activewear72

Pros

✓ Excellent loft and warmth-to-weight ratio
✓ More compressible than most synthetic insulations
✓ Retains warmth even when wet
✓ Consistent performance in variable conditions

Cons

✗ Proprietary to Arc'teryx — limited availability
✗ More expensive than generic synthetic insulation
✗ Not as warm per weight as high-quality down
✗ Fully synthetic — not biodegradable

Care Guide

Washwarm (40°C)

Cyclepermanent press

Detergentmild

BleachDo not bleach

Drytumble low

Ironlow

Dry Cleanavoid

SoftenerNo

Special Notes

• Machine washable synthetic insulation

• Tumble dry low to maintain loft

Additional Care Tips

• Machine wash cold (30°C/85°F) on gentle cycle with technical detergent
• Tumble dry on low heat to fully restore loft
• Do not iron — heat damages synthetic fibers
• Do not dry clean
• Close all zippers and Velcro before washing
• Store hanging or loosely in a breathable garment bag

Cost

$$$$$

Premium

Shrinkage

Won't shrink with normal washing

Eco Rating

High environmental impact