Women's Propet Visper Trail Shoes Take to the trails in this precision knit and leather upper with padded collar and tongue. Pull on tabs at heel and tongue. OrthoLite® X40™ sets the industry standard for high rebound performance with an elasticity rating over 40%. Plus an EVA spacer to customize fit. EVA midsole with toe guard plus Vibram® Arctic Grip® three season traction outsole with Wet-Ice Technology. Scotchgard™, OrthoLite®, Vibram®, Double insoles. A5500 pending.