Lightweight indoor trainers from Asics with a synthetic upper. These shoes feature GELTM technology for energetic cushioning and shock absorption in the rear and forefoot areas. The anti-slip sole is perfect for sports like handball, volleyball, or squash. Upper: Synthetic, Sole: Rubber. Please make sure that you try your footwear on before returning, as the box or label may state a US/Euro size which is different to the UK size.