Strong across the board — well-made, safe to wear, and low planet cost.
↳ Daily wear, no caveats.
Label Confidence
LOWLabel 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.
Why this material grade?
This product scored 72/100 on the 7-axis material rubric, based on its composition of 75% Organic Cotton, 20% Recycled Nylon, 3% Nylon, 2% Elastane. Blended from 75% Organic Cotton, 20% Recycled Nylon, 3% Nylon, 2% Spandex — the score is a weighted average based on each material's proportion.
B (70-84): Good material composition — above average across most axes.
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.
Composition
75% Organic Cotton, 20% Recycled Nylon, 3% Nylon, 2% Elastane
Good quality, eco-friendly
Solid fabric with strong environmental credentials. Organic Cotton (75%) is doing the heavy lifting. This is a smart buy.
Synthetic fabrics can contain BPA, which mimics estrogen. Studies have found BPA transferring to skin through sweat contact.
This fabric will take 200+ years to decompose. That means a shirt you buy today will still exist in the year 2226.
Dryer heat destroys spandex/elastane over time. Your leggings and stretchy clothes will last 2x longer if you skip the dryer.
Biodegradability
Not BiodegradableMaterials will persist in the environment for decades.
Health & environmental impact →Health Impact
Microplastic shedding · skin-contact synthetic load · likely chemical treatments
Moderate health impact — some synthetic content or possible chemical treatments. Rotate with natural-fiber alternatives where you can.
400,000 fibers/wash
25% synthetic
No flags
Care Guide
Decode symbols →Wash
cold (30°C)
Bleach
Do not bleach
Dry
line dry
Iron
low
Dry Clean
avoid
Best For
Good comfort (73) and care ease (77) for casual wear
Good durability (67) and comfort (73) for office wear
Good comfort (73) and breathability (72) for sleeping
Good breathability (72) and comfort (73) for undergarments
Good durability (67) and breathability (72) for outdoor activities
Good sustainability score (74)
Better Alternatives
Higher-rated underwear products — each card shows how much better this alt scores vs your current product.
MUJI
Lyocell Blend Low Rise Boxer Briefs
95% Lyocell, 5% Spandex
MUJI
Lyocell Blend Front Open Boxer Briefs
95% Lyocell, 5% Spandex
MUJI
Men's Smooth Low Rise Boxer Brief
Lyocell 95%, Spandex 5%
MUJI
Men's Smooth Front Open Boxer Brief
Lyocell 95%, Spandex 5%