Imagine a nicely cushioned shoe that is so light you can barely feel it. Sonic Aero delivers this feeling, with a snug, comfortable fit, smooth ride plus it's super lightweight. So light you'll feel like you can fly, at approximately 243gm are among the lightest training shoes. Salomon's 3D ride concept ensures there are no ''dead spots'', for more response and connection to the ground. 3D Grip delivers positive traction on wet or dry surfaces. Combining Salomon's high performance last with EndoFit and SensiFit closure, Sonic fits precisely and securely, with or without socks. Details: Wet Traction Contagrip outsole, EnergyCell midsole, OrthoLite sockliner, 3D stretch air and breathable open mesh upper, 3D Flex, Sensifit and EndoFit. Material: Mesh, Rubber.