Salomon Women's Sonic Aero W L39349700 Trail Runner 100% Textile and Synthetic Imported Rubber sole So light you'll feel like you can fly. At approximately 243gm (8.6oz), the Sonic Aero W is among the lightest training shoes. Salomon's 3D Ride concept ensures there are no "dead spots", for making 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. Salomon 2 year limited warranty