63% cotton + 35% polyester + 2% spandex Super Soft & Good Elasticity: It was made of 63% cotton + 35% polyester + 2% spandex, it has really high breathability and elasticity, provide max comfortable for your feet, it’s suitable for all seasons. Special Design: These funny socks are featuring lovely smile face on the top. Heel pull tab design prevents sock from slipping and is easy for you to put on and take off. Exquisite Packaging: The exquisite gift box contains 6 pairs with different colors, practical and beautiful, as an ideal gift for family, friend, etc. Suitable: Design for sports, jogging, workout, walking, hiking, gym, cycling, traveling, golf, competition, marathon, outdoor activities and daily wear, the stretchy breathable fabric helps keep your feet cool and dry. Free Size: Free size 220-270mm, Suitable for the US shoe sizes Men’s 5-9 and Women’s 5-11. Best choice for teens, adult, male, female etc.