The X 17.2 features a one-piece techfit® compression upper, which requires zero wear-in time perfectly moulding to natural shape of your foot, while the speed skin exterior has been updated to create a smooth and sleek look. A sock construction provides a snug fit for ultra-fast movements, while the tpu outsole offers superior traction and grip on firm ground surfaces. Please note: To achieve the perfect fit, Pro:Direct recommend you go up half a size for the entire adidas X range.