Patagonia

Women's Long-Sleeved Mainstay Top

T-ShirtsSKU: 42310

Safe to wear, but flimsy build.

↳ Safe basics, but expect to replace it sooner.

Quality C · 69Health B · 73Eco · 71

Label Confidence

LOW

Label confidence low — multiple signals suggest the composition may be incomplete, vague, or hard to verify. Treat scores as directional.

⚠Organic cotton claim without explicit certification (GOTS, OCS). Check brand's certification disclosures separately.
⚠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 →

Why this grade?

This product scored 69/100 based on its composition of 60% Organic Cotton, 40% Recycled Polyester. Blended from 60% Organic Cotton, 40% Recycled Polyester — the overall score is a weighted average based on each material's proportion.

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

Composition

60% Organic Cotton, 40% Recycled Polyester

60% Organic Cotton (74)40% Recycled Polyester (62)

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.

🔬

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

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

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