Products
Snow Peak — Dry Thermal L/S T-Shirt

Snow Peak

Dry Thermal L/S T-Shirt

T-ShirtsSKU: SW-25AU01102081
C

62/100

Well-made, but plastic on skin.

Outerwear or layers — not for direct skin contact.

Material C · 62Health D · 40Eco · 55Label · moderate

Why this material grade?

This product scored 62/100 on the 7-axis material rubric, based on its composition of 100% Recycled Polyester.

C (55-69): Average material composition — typical blend, reasonable for everyday wear.

Average quality, high synthetic content

Decent for everyday wear, but the synthetic content means microplastic shedding and it won't biodegrade. Consider natural alternatives for your next purchase.

Breakdown

Composition

100% Recycled Polyester

Plastic-based, recycled — sheds microplastics in wash

🔬

Every wash of synthetic fabric releases up to 700,000 microplastic fibers into waterways. Use a Guppyfriend bag to catch them.

🌍

This fabric will take 200+ years to decompose. That means a shirt you buy today will still exist in the year 2226.

⚠️

Synthetic fabrics can contain BPA, which mimics estrogen. Studies have found BPA transferring to skin through sweat contact.

Network

Performance

spec sheet
Construction
Waffle

Textured knit — thermal layers

Cost per wear

rough estimate
49¢/wear · 104 expected wears

Strong cost-per-wear

How we got there

Base for T-Shirts: 80 expected wears.

× 1.30 for Recycled Polyester (high-durability fiber, durability 83).

= 104 expected wears. $51 ÷ 10449¢/wear.

Missing GSM — this is a category-level estimate, not garment-specific. Expect ±30% variance.

Real life is messier than a formula: how often you wash, how you wash, whether you wear it inside-out, dry on low — all of it shifts the number. This is the ceiling under reasonable care.

40°

Wash

warm (40°C)

Bleach

Do not bleach

Dry

tumble low

Iron

low

P

Dry Clean

avoid

Cycle: normalDetergent: regularSoftener: No

Tradeoffs

Health Impact

Microplastic shedding · skin-contact synthetic load · likely chemical treatments

D40/100

High health impact — significant synthetic content or likely chemical treatments. For frequent skin-contact wear, consider a natural-fiber alternative.

MicroplasticsHIGH

600,000 fibers/wash

Skin contactHIGH

100% synthetic

ChemicalsLOW

Antimony

  • Antimony (trace): Recycled polyester carries reduced (but non-zero) antimony residue from upstream PET feedstock.
🌿 Find plastic-free alternatives →How we score health impact →Not medical advice — based on material composition.

Eco Rating

55/100

Moderate impact — consider eco alternatives

Learn about eco ratings →

Biodegradability

Not Biodegradable

Materials will persist in the environment for decades.

Health & environmental impact →

Label Confidence

MODERATE

Label confidence moderate — one signal suggests the composition may be incomplete or under-verified.

  • Recycled-fiber claim without explicit certification (GRS, RCS). Chain-of-custody for recycled materials is hard to verify without one.
How fabric labels can mislead — and what to look for →

What this score doesn't measure

  • ×Fiber grade. Staple length, micronaire, strength. "100% cotton" could be short-staple upland or long-staple Pima — same label, very different fabric.
  • ×Yarn processing. Singles count, ply (single vs two-ply), spinning method (open-end vs ring-spun vs compact), mercerization. Invisible from any label.
  • ×Knit / weave structure. Single jersey vs interlock, knit tightness. A loose knit pills; a tight knit lasts.
  • ×Fabric weight (GSM). One construction signal among several — and high GSM can come from loose cheap yarn just as easily as from fine tight yarn. We have it for blank manufacturers, rarely for retail.
  • ×Pre-shrink processing. Sanforized cotton shrinks ~1%; non-sanforized can shrink up to 10%. Not visible from the composition tag.
  • ×Construction quality. Stitch density (SPI), seam types, collar geometry, manufacturing tolerances (AQL). These often matter more than the fiber itself.
  • ×Specific chemical loads. Health Impact flags "likely PFAS / possible formaldehyde" from composition × category — we don't lab-test individual SKUs.

We rate the fabric, not the garment. Composition is the floor of what you're guaranteed to be getting — most shoppers don't have that.

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