Cotton, spandex import Drum Drying, Machine Washing, Air Drying, Hand Washing 1. Comfort Material: These 5-toe running socks are made of 97 percent cotton and 3 percent spandex 2. [Foot protection] : You will receive high-quality cotton five-finger socks with better sweat absorption performance, soft feel and skin-friendly. They are designed to reduce friction and avoid blisters for serious and recreational athletes 3.[Makes running fun]: Open-toe socks are soft and breathable. It improves blood circulation in the feet. Which do you enjoy more, running or other physical exercise 4. [Washing instructions and services] : machine wash, hand wash. Rotary drying and air drying. No iron. Don't bleach. Do not soak socks in hot or soapy water for long periods of time.