Graduated compression performance socks help improve blood and oxygen circulation in your feet, ankles, and legs. The compression fabric helps reduce muscle vibration which could cause soreness and fatigue. Mueller® Graduated Compression Performance Socks feature: Odor resistant, antimicrobial Moisture management material Extremely durable fabric Breathable performance Mueller® Exclusive HYDRASHADE™ UV Protection fabric UPF To use, place thumbs inside your sock and gather the material. Slip foot inside the sock, and slowly pull it up over your heel. Gently slide sock up the leg and smooth out any bunching or wrinkles.