Jobst 30-40 Mmhg Activewear Knee High Support Socks Providing Effective Leg Therapy In Energizing Unisex Athletic Compression Socks. Dri-release Yarn Which Looks And Feels Like Cotton Help Keep Feet Dry And Comfortable. Non-constricting Comfort Band Keeps Socks Up Without Binding Or Pinching. Reinforced Heel Resists Abrasion And Provides Greater Durability. Seamless Toe And 360 Degree Cushioned Foot Increases Comfort. Machine Wash Support Socks In A Mesh Laundry Bag Or Hand Wash With Warm Water Using A Mild Soap Or Detergent Designed For Compression Stockings. Machine Dry On Low Heat. 58% Polyester 20% Nylon 10% Cotton 12% Spandex Latex Free. 30-40 Mmhg (ccl 2) Very Firm Gradient Compression Indication Guide: Chronic Venous Insufficiency Deep Vein Thrombosis Post-thrombotic Syndrome Severe Varicose Veins Severe Edema / Lymphedema Venous Ulcer Lymphedema Orthostatic Hypotension Postural Hypotension Helps Prevent Dvt (deep Vein Thrombosis)