ASICS Men's GT 1000 Running Shoe 100% Synthetic and mesh Rubber sole DuoMax Support System dual-density midsole Guidance Line vertical flex grooves Rearfoot and forefoot GEL Cushioning Trusstic System for a lightweight sole DuraSponge outsole Weight: 10.4 oz Stability, flexibility, and performance are the cornerstones of this dependable running shoe from ASICS.