PowerStep Pinnacle Wool Insole (Unisex) - Gray/RedJourney insoles were designed specifically for use on rugged terrain. A soft and durable wool top fabric and cushioning foam absorb the impact of each step. Insulates against heat and cold for increased comfort in all seasons. Versatile styling fits in a variety of trail running shoes, hiking boots, ski and snow boots and work boots. Firm but flexible arch support and heel cradle Dual layer cushioning Shock absorbing foam Insulating wool top fabric