Applications: runing,walking,jogging,outdoor/athletic,gym,workout,training,indoor. Lining: Breathable fabric lining for a great comfortable in-shoe feel. Uppers: Breathable and durable mesh fabric material makes your feet feel cool and clean. Out-soles: Non slip, flexible rubber sole with air cushion which offer for stability and maximum moving. Functional: Engineered Arch support and cushioning heel that it enhances comfort and safety. felt sole.