ChezMax Calf Compression Sleeve (1 Pair) for Men and Women's Sport 1. MATERIAL: Polyamide and spandex. Adding silicone to prevent sliding. 2. RECOMMENDATION FOR SIZE: Our wide 1.2 inch anti slip strap ensures the leg compression sleeves fit just right and do not slip down your leg whilst running or playing. Available in 3 sizes: M fits leg top circumference from 12"-14", bottom circumference from 7"-11". L fits leg top circumference from 13"-17", bottom circumference from 8"-12". XL fits leg top circumference from 15"-19", bottom circumference from 9"-13". Please use the above guide to determine your size. 3. MULTIFUNCTION: High elasticity, quick dry, breathable, sweat and other functions. Our compression sleeves help you to increase stamina, recover faster & support muscle force! And ensure increased blood transport to muscles over the entire length of the sleeve and prevent injuries. 4. Calf Support and Injury Prevention: Micro-ribbing on the back of the calf sleeve provides calf support and helps to treat calf strains. Using the leg sleeves while running can reduce calf cramps and lessen fatigue. Pin-point compression provides targeted support where it is needed the most. The compression in the leg sleeve also helps to provide muscle stabilization, reducing micro tears and preventing injuries 5. Shin Splint Relief: The Compression Sleeve was designed by professional athletic trainers to specifically target shin splints. Help to stabilize muscles and prevent injuries. Whether suffering from shin splints due to running, playing basketball, or just everyday activities, it helps to provide much needed relief