Rubber sole, knit fabric, lace up shoes for hiking, trail running, or just casual everyday wear! Rubber outsoles offer the optimal balance of traction and durability, with a responsive feel on unpredictable terrain.circular lug patterns provide grip during movement. Removable insoles support the feet's arches and not cause too much pressure and transfer weight over the ball of the feet. Elestic topline wrapped perfectly around feet, which make shoes not fall off during exercise Integral knitted upper structure makes your feet feel lightweight and breathable. In excellent used condition. See photos for details. Machine washable on gentle cycle, air dry.