Features: 95% Viscose from Bamboo 5% Spandex 3 pack of briefs Our bamboo is not chemically treated Please note that for hygienic reasons, all underwear sales are final and non-refundable. Care Instructions: Gentle wash cold, inside out, with like colors (make sure all buttons & snaps are closed) Tumble dry low Pro tips: Lay flat to dry for optimal results Place in garment bag for extra protection Use a color catcher to further prevent color bleeding