CEP Compression Calf Sleeves 79 % polyamide, 21 % spandex Imported 20-30 mmHg graduated + consistent compression contains the calf muscle and increases circulation to help prevent Shin splints, muscle soreness, and common overuse injuries The halo top-band lands comfortably below the knee, keeping your calf sleeves in place, mile after mile Unique knit design improves air flow over the skin allows air to cool as it flows through to the skin helping moderate body temperature in warmer weather and humid climates Scientifically enhance performance thanks to the Medically tuned compressive yarns that wrap around the leg over 300 times to provide precise compression down to the millimeter Because your feet are exposed, CEP calf sleeves are only intended for active Use. Do not wear calf sleeves on an airplane or sitting for long durations because your feet could swell