Designed to be as tough as Luka's game, the Luka 77 is built to help you dominate on rugged outdoor courts. The high-abrasion mesh and a durable rubber outsole stand up to concrete and tarmac. Snappy Air Zoom cushioning and responsive dual-density foam help keep you comfortable, so you're ready for wherever the game takes you. Benefits * High-abrasion mesh in the upper works with a full-length rubber outsole to give you the durability and ventilation you need to play on rough outdoor surfaces. * Dual-density foam in the midsole places a layer of soft, responsive foam over a firmer outer layer of foam. It works with strategic cutouts in the heel to give you springy, supportive cushioning for a comfortable ride and soft landings.