Bikini Brief from $16 · Thong from $18 · Sizes XXS–7XL
The Clean Standard™
★★★★★Loved for softness, breathability and all-day comfort
OEKO-TEX
Certified
OCS
Organic Content Std.
0%
PFAS chemicals
XXS–7XL
Size range
The Problem With Most Underwear
Most underwear is plastic, worn against skin, all day.
Polyester and nylon dominate the category because they're cheap to spin and stretch well. What that shortcut costs is worth knowing before it's the fabric touching you for sixteen hours a day.
01
Forever chemicals, next to skin
PFAS are widely used in synthetic textiles like polyester and nylon and have been linked to raised cholesterol, metabolic disorders and immune deficits.
02
Additives that migrate
Polyester manufacturing uses phthalates and BPA, both recognised endocrine disruptors, plus antimony that can migrate to skin when fabric is heated.
03
Bamboo does what plastic can't
Tanboocel bamboo lyocell is a natural fibre — no PFAS, no polyester, no nylon, and it breathes the way synthetics never will.
Hahladakis et al. (2018), Journal of Hazardous Materials · Oecotextiles (2018) · Muñoz & Lein, Open Access Government (2024)
Allwear Bamboo vs. Typical
Same silhouette. Completely different material.
Allwear Bamboo
Typical Underwear
Primary material
Tanboocel® Bamboo Lyocell
Plastic polyester / nylon
PFAS chemicals
None — verified
Commonly present
Pesticide residue
None — OCS certified
Untested
Microplastic shedding
92% natural fibre
High — every wash
Dye finishing
Azo-free, non-toxic
Conventional azo dyes
Harmful substance test
OEKO-TEX certified
None
Skin contact safety
The Clean Standard™
Unknown
Size range
XXS–7XL
Typically XS–XL
Fabric & Fit
Soft, seamless,
and built for all-day wear.
Bamboo lyocell fibre is naturally smooth and temperature-regulating, so it stays comfortable whether you're at a desk or on your feet. Seamless finishes help the Bikini Brief and Thong disappear under clothing without pinching or digging in.
The Ingredient Label
Women’s Bikini Brief & Thong · The Clean Standard™
Tanboocel® Bamboo Lyocell
92%
BPA-free Elastane
8%
PFAS / forever chemicals
0%
Toxic dye finishing
0%
Formaldehyde
0%
Find Your Fit
Designed for her.
Two seamless silhouettes.
Choose the fuller coverage of the Bikini Brief or the minimal, no-show profile of the Bamboo Thong. Both come in Black and Bone, with inclusive sizing from XXS to 7XL.
Tests fabric against a defined list of restricted substances before it's approved.
OCS
Organic Content Standard — verifies the organic content claimed in the fibre.
PFAS Free
None detected in independent testing, not self-reported.
No Formaldehyde
0% formaldehyde finishing, tested and certified.
Why avoid typical synthetic underwear?
PFAS, often called forever chemicals, are widely used in synthetic textiles like polyester and nylon and have been linked to raised cholesterol, metabolic disorders and immune deficits. Polyester manufacturing also uses phthalates and BPA, recognised endocrine disruptors, and antimony, which can migrate to skin when the fabric is heated.
View Sources
Hahladakis et al. (2018), Journal of Hazardous Materials — phthalates and BPA in polyester manufacturing.
Oecotextiles (2018), Oecotextiles Blog — antimony in polyester production.
Muñoz, M.A. & Lein, P.J., Open Access Government (2024) — PFAS in synthetic textiles.
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Customer Reviews
Worn, washed, and reordered.
★★★★★
Comfort customers come back for
★★★★★
“I am so in love with these. They don't ride up or bunch which is a huge plus, and the fabric is so soft.”
Clara O. · Verified buyer
★★★★★
“Like them alot! Need more colors please.”
Robin S. · Verified buyer
★★★★★
“The bamboo fabric is so nice! Got both the black and white and they are perfect.”
Karen N. · Verified buyer
★★★★★
“Love them! I really like the fabric! Lightweight, comfortable, plus nontoxic! They fit true to size (normally a medium in other brands). Will be a returning customer.”
Samantha O. · Verified buyer
★★★★★
“These are the BEST! So soft and have great cut.”
Maria Q. · Verified buyer
★★★★★
“They are soft and fit just right they do run a bit small to my liking but other than that the items worked out for me.”
Perla L. · Verified buyer
Current Offer
Choose your silhouette. Bundle up and save.
More pairs. More value.
3-pack includes 1 free pair · 5-pack includes 2 free pairs
