
Our process
We partnered with a leading manufacturer who specializes in supima textiles, and put the finished product through a rigorous quality assurance process to make sure every towel we ship out lives up to the Onsen name.
It all starts with supima sourced from family farms in the United States, which we ship to our partner so they can begin the process.

Strength testing of fibers to
guarantee a long-lasting towel

Supima yarns woven into our
signature lightweight waffle weave

Edges bound and finished by a
human being to ensure quality

Garment washed for softness
and a relaxed, open weave

Quality checked for consistent
stitching, loose threads, and size

Washing/drying tests that check for
shrinkage, strength, and colorfastness



