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Nontoxic Nook

Onsen

Onsen makes waffle-weave towels and robes from 100% USA-grown Supima cotton. Their open honeycomb construction dries roughly twice as fast as terry cloth and carries OEKO-TEX Standard 100 certification — tested against 350 chemical compounds.

Vetting record

The 15 criteria
Products listed
2
Criteria checked
15
Last verified
October 2026
Listed since
June 2026

Each of the 2 Onsen products listed here disclosed its materials and passed all 15 published criteria. Nothing is listed for a fee, and affiliate commissions never affect what qualifies. Listings are re-checked on a rolling basis and come off when a product changes.

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Onsen products

Listings link out to Onsen or a retailer that sells the item — Nontoxic Nook is not a retailer.

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.