In 3 sizes, with a grippy non-slip outsole. Oeko-Tex Standard 100 certified. Cushy and padded for ultimate lounging, you might never leave the house again (and we don't blame you).Content + Care Cotton Machine wash with light colors, tumble dry. Do not bleach. Imported Size + Fit Small: 10.5" x 4" W, Womens 6-8, Mens 5 Medium: 11.25" L x 4.5" W, Women's 8-10/Men's 5-9 Large: 12" L x 4.5" W, Women's 11+/Men's 10-14