Merrell Men's All Out Blaze Aero Sport Hiking Water Shoe Synthetic Vibram sole Lace-up hiking shoe with branding details featuring breathable mesh and durable synthetic upper Omni-Fit lacing system Molded TPU heel counter, Breathable mesh lining with odor-preventing M Select FRESH technologies Cushioned and protective UniFly midsole TC5+ Vibram outsole with 5 mm lug depth