The Propet Visp features a lightweight knit upper and the Vibram® Arctic Grip AT outsole. Take to the trails in this precision knit and leather upper with padded collar and tongue. Pull on tabs at heel and tongue. Lightweight breathable precision knit mesh is Scotchgard™ treated for both stain and water resistance. EVA Midsole with Vibram Arctic Grip All Terrain outsole with XS Trek Evo Grip system. Easy to remove Ortholite® X40 insole with a high rebound performance with an elasticity rating of over 40%, feautring Propet's Exra Volume EVA spacer to customize your fit.