Propet Visper is a rugged trail running sneaker. These hiking shoes have knit and leather uppers, high rebound insoles and a Vibram® Arctic Grip outsole. An EVA footbed and midsole, tongue and heel collar pull tabs and lace-up closure will make these outdoor shoes a must-have. Knit and Leather Uppers. EVA Footbed. Lace-Up Closure. Vibram® Arctic Grip Outsole.