Merrell's Trail Glove 4 pulls no punches and delivers their best minimal performance trail runner yet. Super lightweight mesh and TPU upper. Breathable mesh lining. Sock-like fit throughout with a slightly wider toebox for a secure fit. TrailProtect pad offers excellent underfoot protection on the trail. Ultra grippy, durable Vibram TC5+ outsole. Stack height (heel/toe): 11.5/11.5mm; footbed: 0mm; insole: 3mm; midsole: 4/4mm; sole: 1.5 web, 3mm lugs.