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)