Adco knee sock that has graduated compression and is perfectly harmonized with that of the circulatory system, providing 100% of the desired applied compression to the ankle, 70% to the calf and 40% to the thigh. It is considered a light compression sock (class 1), with 19-21 mmHg and helps with good blood circulation, prevents the appearance of varicose veins and relieves people with phlebitis. Product care: We recommend hand washing in lukewarm water with mild soap and drying away from the sun or heat sources.