NWT Original PENGUIN Brand 3-Pack Crew Socks A mix of fun patterns define a pack of cotton-blend crew socks that check both the cool and comfortable boxes. Pack of three pairs Sock 1: 52% cotton, 44% polyester, 2% spandex, 2% rubber; sock 2: 54% cotton, 41% polyester, 3% spandex, 2% rubber; sock 3: 52% cotton, 44% polyester, 2% spandex, 2% rubber Machine wash, tumble dry