Merrell Women's Moab 2 Mid Gtx Hiking Boot 100% Textile/Synthetic Imported Synthetic sole Shaft measures approximately 4" from arch GORE-TEX waterproof membrane, exceptional breathability and waterproof performance Synthetic leather and mesh upper , 5mm lug depth Bellows, closed-cell foam tongue keeps moisture and debris out. Air cushion in the heel absorbs shock and adds stability Merrell M Select FIT.ECO+ blended EVA contoured footbed with added zonal arch and heel support Vibram TC5+ sole