Buy 2 pairs for alternate use. Wash gently with mild detergent in lukewarm water. Do not wring or twist. Dry flat away from heat and sunlight. Recommended for: Pronounced Varicose Veins, Spider Veins, Edema, DVT, Post-Surgery, Swelling in Ankles Calf Feet, Enlarged Bulging Veins, Pregnant Nursing Expecting Mothers (when indicated by a doctor), Travel (prevents blood pooling and clots in frequent flyers), Tired Aching Heavy Legs, Muscle Recovery Post Cardio Workout and Exercise. Perfect fit: Measure according to our size chart. If this is your first time to purchase compression socks or stockings, we suggest that you select one size bigger. Silicone band for wearing comfort yet snugly fit to ensure the stockings remain in place without constricting your leg. Please note that if you are allergic to silicone, you should order with caution. Open-toe design allows for additional sizing flexibility relative to individual foot length, as well as providing additional ventilation. Graduated compression technology is greatest at the ankle (20-30mmHg) and decreases gradually up the leg to improve healthy circulation. Lin Performance compression stockings evolve on the development and marketing of a true and correct compression for our customers by using SAG compression tester ( MST MK IV ). Quality assurance with correct compression helps you relieve pain, quick recovery and healthy living. 60%Nylon,40%Spandex.