Adidas Badminton Feather Team Court Shoes Heel Stabilizer - Optimises the fit on the heel and provides more stability. adiPRENE+ - Maintains forefoot propulsion and efficiency. Comfort and shock absorption adiPRENE - Located under the heel for superior cushioning at impact. Non-Marking Rubber Outsole - Very grippy rubber which is non-marking, so it is suitabe for indoor use. Synthetic Leather and Mesh Upper - Upper material which is lightweight, comfortable and breathable enhancing performance and fit.