FabricIQ
Reading the label…
01Verdict
Well-made, but plastic on skin.
Best for Outerwear or layers — not for direct skin contact.
Material B · 81Health C · 63Eco · 65Label · high140 gsm
Why this material grade?
This product scored 81/100 on the material-quality rubric (durability, comfort, breathability, warmth, moisture-wicking, care-ease), based on its composition of 83% Merino Wool, 12% Nylon, 5% Elastane. Sustainability is scored separately as the Eco Rating. Blended from 83% Merino Wool, 12% Nylon, 5% Spandex — the score is a weighted average based on each material's proportion.
B (70-84): Good material composition — above average across most axes.
Good quality
Well-balanced fabric that should serve you well. The natural-synthetic blend offers durability with comfort. Follow the care guide to maximize lifespan.
Great fabric value
$25Better-than-typical fabric for this category, at a below-median price.
$0.31 per quality point Category median: $27 · grade B
Fabric value only — compares material quality to price vs other underwear. Construction, fit, and brand aren't measured.
02Breakdown
Composition
83% Merino Wool, 12% Nylon, 5% Elastane
Mostly natural with stretch
Fabric details
eVent™
140 g/m²
Likely chemical finishes
⚠ Antimicrobial biocide · biocide
Stated on the product page — not lab-tested. Not medical advice.
Care (from the label)
Machine wash coldLine dryIron low
Sustainability is scored separately — see the Eco Rating below.
⚠️
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.
03Network
Performance
spec sheet- Fabric weight
- 140 g/m²
Mid-weight
Cost per wear
estimated37¢/wear · 68 expected wears
Strong cost-per-wear
How we got there
Base for Underwear: 80 expected wears.
× 0.85 for 140 g/m² (mid-weight).
× 1.00 for Merino Wool (mid-durability fiber, durability 74).
= 68 expected wears. $25 ÷ 68 ≈ 37¢/wear.
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.
Care Guide
Decode symbolsWash
cold (30°C)
Bleach
Do not bleach
Dry
flat dry
Iron
Best For
🧥Winter Outerwear
ExcellentExcellent warmth (80) and durability (74) for cold weather
👔Formal/Office
ExcellentExcellent durability (74) and comfort (83) for office wear
🏃Athletic Wear
GoodGood breathability (76) and moisture wicking (83) for light activity
👕Everyday Casual
GoodGood comfort (83) and care ease (55) for casual wear
😴Sleepwear
GoodGood comfort (83) and breathability (76) for sleeping
🩲Underwear
GoodGood breathability (76) and comfort (83) for undergarments
Better Alternatives
Higher-rated underwear products — each card shows how much better this alt scores vs your current product.
04Tradeoffs
Health Impact
Microplastic shedding · skin-contact synthetic load · likely chemical treatments
C63/100
Moderate health impact — some synthetic content or possible chemical treatments. Rotate with natural-fiber alternatives where you can.
Microplastics LOW
Very low
Skin contact MODERATE
17% synthetic
Chemicals HIGH
Biocide
- Biocide (likely): "Antimicrobial biocide" stated on the product page — observed, not inferred.
Biodegradability
Not BiodegradableMaterials will persist in the environment for decades.
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.
05Action
