Therafirm Men's Mild Ribbed Trouser Support Socks improve circulation, relieve tired, heavy, aching legs and prevent mild swelling, leg discomfort, & deep vein thrombosis (DVT) in long distance travelers. True gradient compression delivers a controlled amount of pressure greatest at the ankle and gradually decreases towards the top of the stocking to promote better blood flow. Therafirm Men's Mild Ribbed Trouser Support Socks Feature: 15-20 mmHg (the mean compression for an average ankle size) Soft comfort band is non-restrictive while staying in place all day Comfort toe and heel Nylon, spandex blend Micro-Cool process wicks away moisture, providing a comfortable coolness Hand wash in lukewarm or cold water with mild detergent. Avoid prolonged exposure to heat. 100% USA Made Be sure to use the size chart and measuring instructions to determine best size and fit. Contraindications: Any skin irritations, allergies to dyes, congestive heart failure, arterial disorders, existing DVT. If any of these conditions apply, consult your physician for advice.Gradient compression hosiery is constructed differently than traditional hosiery. Those who have never worn gradient compression before may feel that these garments are difficult to put on or tighter than traditional hosiery. It is this "snug" fit that provides the graduated pressure. It is very important to measure the ankle, calf, and sometimes thigh to ensure a proper fit and to receive the benefits of the graduated compression.If pain, discomfort, or areas of binding occur, the stockings should be removed immediately. Always consult with your physician before wearing gradient compression garments.