Wear the Clarks Illume Oxygen for fitness activities. Featuring a mesh PU upper, this thin, athletic-inspired women's casual gives long-term durability while there is a bungee lacing closure for easy on/off, adjustability, and snug fit. The inner lining is made of synthetic for maximum breathability. It has a detachable OrthoLite® molded insole for cushioning support and moisture control to keep your foot cool and dry. With a rubber outsole, it provides amazing traction control on smooth floors and flexibility. The Clarks Illume Oxygen is perfect for athletic events.