100% Polyester 100% Polyester. Machine Washable SIZE:One size,22 x 8 cm ( 8.7 x 3.1 inches), fits to US 5-8. Stretchy fit for most men and women MULTI-FUNCTION: Moisture wicking, ventilation, smell free, medium thickness. Perfect gifts for Mother’s Day, Christmas, Thanksgiving, Birthday and Joke gifts. FUN AND COMFORTABLE: Wear this vivid animal feet socks made of ultra soft material, you will get lots of fun and meanwhile a great comfort and breath for your feet. CUTE DESIGN-The Pattern is printed on one side of the socks AND THE BOTTOMS ARE PLAIN WHITE. There’s more room to stretch, cool, adorable looking and they will brighten your day certainly???