PrimaLoft

B

Premium synthetic insulation originally developed for the US Army. Ultra-fine polyester fibers that mimic down performance while maintaining warmth when wet.

Score Breakdown

70/100
Durability72
Comfort70
Breathability45
Warmth90
Moisture Wicking60
Sustainability28
Care Ease72

Best For

🧥Winter Outerwear
Excellent

Excellent warmth (90) and durability (72) for cold weather

👔Formal/Office
Excellent

Excellent durability (72) and comfort (70) for office wear

👕Everyday Casual
Good

Good comfort (70) and care ease (72) for casual wear

🌧️Rain/Weather
Good

Good moisture wicking (60) and durability (72) for weather protection

Detailed Use Case Scores

outerwear90
activewear78

Pros

  • Retains warmth even when wet — unlike down
  • Hypoallergenic alternative to down
  • Compressible and packable
  • Lighter and warmer than most synthetic fills

Cons

  • Not as warm per gram as high-quality down
  • Petroleum-based and not biodegradable
  • Loses loft faster than down over time
  • More expensive than basic polyester fill

Care Guide

Washcold (30°C)
Cyclepermanent press
Detergentmild
BleachDo not bleach
Drytumble low
Ironlow
Dry Cleanavoid
SoftenerNo

Special Notes

Use mild detergent

Tumble dry low to restore loft

Machine washable unlike most insulations

Additional Care Tips

  • Machine wash cold (30°C/85°F) on gentle cycle with mild, non-detergent soap
  • Tumble dry on low heat with clean tennis balls to restore loft — similar to down care
  • Do not dry clean — solvents can damage the ultra-fine insulation fibers
  • Store uncompressed in a large breathable bag — prolonged compression reduces insulation performance
  • Avoid bleach and fabric softener which coat and degrade the fine polyester fibers
  • Spot clean the outer shell for minor stains to extend time between full washes

Cost

$$$$$

Premium

Shrinkage

Won't shrink with normal washing

Eco Rating

High environmental impact

PrimaLoft — Fabric Analysis | FabricIQ