Thinsulate
3M's proprietary microfiber insulation made from fine polyester and polypropylene fibers. Traps more warm air in less space than traditional insulation, widely used in gloves, boots, and winter jackets.
Material Score Breakdown
7-axis material rubric, not a garment verdict — see disclosure below.
How long the fabric lasts with regular use
Softness, feel against skin, wearability
Air flow and ventilation
Heat retention and insulation
Ability to pull sweat away from skin
Environmental impact of production and disposal
How easy it is to wash, dry, and maintain
Products with thinsulate
We don't have any garments containing thinsulate in our catalog yet. Browse the full synthetic materials or check the product catalog.
What this score doesn't measure
This is a material rating, not a verdict on any specific garment made from thinsulate. The axes above are research-backed averages for the fiber itself.
- ×Construction. Yarn staple length, weave / knit structure, stitch count, finishing. Identical fiber, very different garments.
- ×Fabric weight (GSM). A 140 GSM tee and a 220 GSM tee made of the same thinsulate feel and last very differently.
- ×Dye + finishing chemicals. Beyond the three we flag (PFAS, formaldehyde, antimony), dozens of textile finishes aren't modelled.
Best For
Good warmth (88) for cold weather
Good comfort (72) and care ease (72) for casual wear
Good durability (65) and comfort (72) for office wear
Good durability (65) and breathability (55) for outdoor activities
Detailed Use Case Scores
Pros
- ✓ Excellent warmth in a thin profile
- ✓ Retains insulating ability when damp
- ✓ Lightweight and low-bulk
- ✓ Machine washable without losing performance
Cons
- ✗ Fully synthetic — petroleum-derived
- ✗ Less breathable than natural insulations
- ✗ Compresses over time with heavy use
- ✗ Not as warm per weight as premium down
Better alternatives
Higher-scored synthetic materials. Same category — what to consider instead.
+8 vs Thinsulate · 76/100
Membrane technology that is waterproof yet breathable. A laminate applied to other fabrics rather than a fabric itself.
+7 vs Thinsulate · 75/100
Ultra-high-molecular-weight polyethylene (UHMWPE) fiber — the world's strongest fiber by weight. 15x stronger than steel, used in cut-resistant gear, ultralight backpacks, and high-performance sails.
+6 vs Thinsulate · 74/100
Waterproof breathable membrane fabric (Gore-Tex, eVent, or similar technology) laminated to a face fabric. The gold standard for rain and storm protection in technical outerwear.
Care Guide
Special Notes
• Machine washable — retains warmth when wet
• Tumble dry low
Additional Care Tips
- • Machine wash warm (40°C/105°F) on gentle cycle
- • Tumble dry on low heat to restore loft
- • Do not iron — synthetic fibers will melt
- • Do not dry clean — solvents can damage microfibers
- • Avoid fabric softeners which reduce performance
- • Store uncompressed to maintain insulation loft
Cost
$$$$$
Mid-range
Shrinkage
Won't shrink with normal washing
Eco Rating
High environmental impact