Reebok Studio Pump 25th SLV Womens Fitness/Aerobics Sneakers Silver Synthetic The Reebok Studio Pump 25th has been released to celebrate the 25th anniversary of this iconic aerobics shoe 3D FuseFrame synthetic and mesh upper for breathable seam-free support Pump internal tongue technology provides the perfect fit and increased support Dual composite SubLite and 3D UltraLite foam midsole adds lightweight cushioning Forefoot and heel foam pods in the non-marking rubber outsole offer superior shock absorption as well as facilitate movement in the studio