ASICS Men's GEL Fuji Runnegade 2 Running Shoe 100% Textile and Synthetic Imported Rubber sole Rear foot gel cushioning system attenuates shock during impact phase and allows for a smooth transition to midstance Trail specific outsole reversed lugs provide uphill and downhill traction on all types of terrain Seamless construction the use of seamless materials reduces the potential for irritation and friction caused by traditional stitches and seams Anti-gravel tongue gusseted construction prevents debris from entering the shoe Anti Gravel Tongue Gussetted construction prevents debris from entering the shoe