Head Grid Indoor Court Shoes Synthetic Upper - With mesh windows, provides a strong and comfortable fit over the top of the foot. Breathable Air Mesh Lining - Allows constant air flow to permeate the shoe for superb ventilation and therefore comfort and odour reduction. Moulded EVA Midsole - For improved cushioning and a springy ride underfoot. HyBrasion - High abrasion compound strengthens high stress areas of the sole. Non-Marking Rubber Outsole - Non-marking for indoor court sports and great traction.