adiPRENE+ - Located under the forefoot for greater propulsion and efficiency as well as better toe-off. Synthetic Overlays - Offers improved support, which helps to give a secure stable fit and enhanced durability. adiTUFF - This is an abrasion resistant material in the toe-upper. This is where indoor court shoes seem to wear out quickest due to dragging of the feet. This increases durability. adiPRENE - Located under the heel for superior shock absorption upon impact. Non-Marking Outsole - Ideal for indoor play.