Lululemon

New Venture Long-Sleeve Shirt Updated Slim-Fit

ShirtsSKU: prod11870234

Safe to wear, but rough on the environment.

↳ Safe to wear; production isn't clean — donate when done.

Material F · 29Health B · 71Eco · 22Label · moderate

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 →

Why this material grade?

This product scored 29/100 on the 7-axis material rubric, based on its composition of 52% Elastomultiester, 34% Recycled Polyester, 14% Nylon. Blended from 34% Recycled Polyester, 14% Nylon — the score is a weighted average based on each material's proportion.

F (<40): Low-rated material composition — consider alternatives.

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

52% Elastomultiester, 34% Recycled Polyester, 14% Nylon

34% Recycled Polyester (62)14% Nylon (58)

Low quality — skip if you can

This scores poorly across the board. It likely won't last, may not be comfortable, and has significant environmental impact. Your money goes further with better materials.

🔬

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.