These fun black cat socks designed on red crew socks and makes an excellent gift for cat enthusiasts. Crafted from bamboo, these socks have the feel of cashmere without the harmful chemicals. Machine wash cold, inside out. Only non-chlorine bleach when needed. Tumble dry low. 66% rayon From bamboo, 32% nylon, and 2% spandex Fits mens shoe sizes 7-12.5.