Our Heartbeat Compression Socks are made of 85% Nylon and 15% Polyester, perfect for women and men who are looking for a close fit from toe to leg. They are breathable and quick-drying to reduce muscle soreness and energize your skin. They feature a thicker ankle fabric area with a more compact, compressed weave, and are easy to put on with a pull-on closure. Machine washable for convenience.