Jobst Activewear 30 40 Knee Hi Socks White XL Heel Cushions Pads Heavy duty vinyl with Permablok 3(R) 10 LL 100 Heavy duty vinyl with Permablok 3(R) bacterial protection * 1´ Firm density foam tops * Radiused seamless corners on upholstered components * Top sections have welded steel support frames * Pivoting joints house hardened steel shoulder bolts with locking nuts to ensure years of trouble free operation * Footswitch control * Power assisted caster system (unless noted otherwise) * 110 volts 60Hz motor (220 volts 50 Hz available on special order) * 400 lb D E Style 6 Cap Cylinders * Features chrome plated steel * Mounting brackets on bottom for truck installation * Heavy duty welded construction * 16 x 10´ x 9´ * Jobst 30 40 mmHg Activewear Knee High Support Socks providing effective leg therapy in energizing unisex athletic compression socks * 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)