Material Composition: Cotton + Acrylic + Synthetic Fiber Care Instructions: Machine Wash Fit Type: Fitted Pattern: Stripes [Product Specifications] Set of 10 pairs, Size: 19-20cm Material: Cotton. Breathable, moisture-wicking, and with natural antibacterial and deodorizing effects, they don't smell even after walking for long periods and can be worn comfortably all day. [Non-Slip & Won't Slip Off] The sock opening features an elastic rib design with excellent elasticity, providing a comfortable fit that's neither too tight nor too loose. These socks are non-slip and won't feel constricting. You don't have to worry about them being too tight or needing to be adjusted to prevent slipping down. The heel of the foot cover socks has a non-slip feature, so they won't slip off even after wearing them for a long time, allowing for comfortable wear. The simple yet not overly simple design creates a subtle positive impression even when you take off your shoes.