Material: Our cozy socks are made of high quality polyester, spandex and wool. Soft, breathable and wearable, which can keep your feet warm and healthy all the time. 5 Pairs: 5 pairs thick knitting cotton socks are more economical and practical. These comfy socks can be weared in various kinds of situations, mixed colors also gives you multi-choice in daily life. Size : These warm knit socks are elastic and thick and they are standard US SIZE which fit shoe sizes from US 5 – 9. Vintage and Trendy Design: Special design various patterns, these warm and breathable socks are perfect for running, walking, gym fitness or hiking, cycling, and all kind of activities. Care: Machine Washable, but hand wash makes socks better. Please do not iron them.