Propet hikers with Vibram Arctic Grip AT with gussetted zip closure get you out on the trail in the perfect fitting boot. Suede and Nubuck upper with gussetted zip closure and adjustable strap for a secure fit in rugged terrain. Waterproof bootie construction keep feet dry. Age - Adult Care Instruction - Spot Clean Insole Description - OrthoLite(R) X40(TM) sets the industry standard for high rebound performance with an elasticity rating over 40% Insole Material - Open Cell Outsole Description - EVA midsole with toe guard plus Vibram(R) Arctic Grip(R) three season traction outsole with Wet-Ice Technology Outsole Material - Rubber Product Closures - Zip Size Description - M = Medium (D) 3E = X-wide (3E) 5E = XX-wide (5E) Size Fit Information - True to Size Waterproof - Waterproof Heel Height - 2 Use - Hiking Technologies Removable Footbed:These styles feature footbeds that can be removed to accommodate custom orthotics. Waterproof:Feet will stay warm and dry with these styles that have been specially designed to keep water out with our Sealtex(R) bootie or laminate construction. OrthoLite(R):OrthoLite(R) insoles are made of open cell, lightweight foams that create a cooler, drier shoe interior without adding unwanted bulk or weight. It's comfort from the inside out. Medicare Pending:These styles are pending A5500 Medicare approval.