Products
Tentree — Chambers Shirt

Tentree

Chambers Shirt

ShirtsSKU: TCM6526-6274-S
B

70/100

Strong across the board — well-made, safe to wear, and low planet cost.

Daily wear, no caveats.

Material B · 70Health B · 71Eco · 77Label · 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 70/100 on the 7-axis material rubric, based on its composition of 55% Hemp, 45% Recycled Polyester. Blended from 55% Hemp, 45% Recycled Polyester — 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

55% Hemp, 45% Recycled Polyester

Good quality, eco-friendly

Solid fabric with strong environmental credentials. Hemp (55%) is doing the heavy lifting. This is a smart buy.

🔬

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.

Eco Rating

77/100

Strong environmental credentials

Learn about eco ratings →

Biodegradability

Not Biodegradable

Materials will persist in the environment for decades.

Health & environmental impact →

Health Impact

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

B71/100

Moderate health impact — some synthetic content or possible chemical treatments. Rotate with natural-fiber alternatives where you can.

MicroplasticsMEDIUM

600,000 fibers/wash

Skin contactMODERATE

45% synthetic

ChemicalsLOW

No flags

🌿 Find plastic-free alternatives →How we score health impact →Not medical advice — based on material composition.
30°

Wash

cold (30°C)

Bleach

Do not bleach

Dry

line dry

Iron

low

P

Dry Clean

avoid

Cycle: normalDetergent: regularSoftener: No

Best For

👔Formal/Office
Good

Good durability (87) and comfort (53) for office wear

⛰️Outdoor/Hiking
Good

Good durability (87) and breathability (58) for outdoor activities

🌱Sustainable Fashion
Good

Good sustainability score (77)