SKIMS Stretch Boxer Brief
Summary
SKIMS Stretch Boxer Brief scores 60/100. 91% modal and 9% elastane — a semi-synthetic cellulose blend with no organic certification. Modal avoids microplastic shedding but is chemically processed from beech wood pulp using carbon disulfide. 9% unspecified elastane with no BPA-free claim. No OEKO-TEX certification, no dye disclosure, no genital liner, unspecified import origin.
At a glance
Key ingredients 3
Modal (91%)Neutral
Semi-synthetic cellulose fiber derived from beech tree pulp. Does not shed microplastics like polyester, which is a meaningful advantage. However, production involves carbon disulfide (a neurotoxin) and SKIMS does not specify whether a closed-loop process is used. No organic or GOTS certification. Not a natural fiber — it is chemically reconstituted cellulose.
See more about Modal (91%) →Elastane (9%)Bad
Petroleum-derived polyurethane at 9% — nearly double what health-conscious brands like NADS use (5%). No BPA-free claim. A 2025 study found underwear elastane contained BPA, BPS, and BPF at concentrations up to 52,967 ng/g with high sweat migration rates. No genital liner to isolate the most absorptive skin from this synthetic.
See more about Elastane (9%) →Undisclosed Dyes & FinishesBad
Multiple colorways with no OEKO-TEX certification or dye safety disclosure. 'Max stretch' fabric marketing suggests chemical finishing treatments that are not disclosed. No independent safety testing verified. Unspecified import origin.
See more about Undisclosed Dyes & Finishes →Get the full breakdown in the Scout app
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