Jobst Activewear 20-30 Mmhg Knee High Firm Compression Socks. Jobst 20-30 Mmhg Activewear Knee High Support Socks Providing Effective Leg Therapy In Energizing Unisex Athletic Compression Socks. Dri-release Yarn Looks And Feels Like Cotton. Helps 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 & 360 Degree Cushioned Foot Increases Comfort. Material Latex Free 60% Polyester 20% Nylon 11% Cotton 9% Spandex 20-30 Mmhg (ccl 1) Firm Gradient Compression Indication Guide: Moderate To Severe Varicose Veins Moderate Leg & Ankle Swelling Relief From Moderate Edema / Lymphedema Varicose Veins During Pregnancy Leg Swelling Following Surgery Following Sclerotherapy Orthostatic Hypotension Postural Hypotension Helps Prevent Dvt (deep Vein Thrombosis)