Jobst For Men 30 40 OT Knee Hi Black XL Jobst Relief 20 30 Knee Hi output level ≤120±3dB Max OSPL90 Autoclavable Up to 325 output level ≤120±3dB Max OSPL90 ≤120±3dB Average OSPL90 113±3 dB Max Gain 29±5dB FOG50 HFA Avg Non slip surface on platform that supports up to 200 Lbs Jobst for Men 30 40 mmHg Open Toe Knee High Compression Socks *A quality Classic ribbed sock in a mild compression support ideal for everyday wear *Fashionable ribbed design delivers gradient compression therapy yet looks like a men's dress sock *Attractive ribbed design with all day non constricting comfort band keeps socks up without binding or pinching *Flat toe seams and roomy toe section for extra wiggle room *Durable reinforced heel resists shoe abrasion *Anti bacterial additive reduces unpleasant sock odors *Special soft micro and multifiber yarns keep feet cooler and dryer *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 *71% Nylon 29% Spandex Elasthan Latex Free *XLarge *Black *30 40 mmHg (CCL 2) 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) *HCPCS Code CPT Code: A6531