60% Combed Cotton, 20% Spandex, 20% Nylon Pull-On closure Machine Wash Do you sit all day, stand all day, or are currently recovering from an illness or injury? Any of these situations can cause leg and foot issues, including varicose veins, ulcers, and other related symptoms. Get ahead of the potential problems with these REXX Compression Knee-High Socks. The graduated compression of 8-15 mmHg help circulation and relieve tired, aching legs and feet. Jump on this deal and have 3 pairs of these great socks on your doorstep and on your legs in no time!