Saucony Women's Progrid Triumph 8 Running Shoe 100% Synthetic and mesh Rubber sole Hydrator collar lining, lightweight breathable mesh Midsole material - SSL EVA, Impact Interface Technology - Full-Length ProGrid, HRC Strobel Board, SRC Impact Zone, Comfortride Sockliner Neutral Arch Lock, Blown rubber, XT-900 Weight - 10.6 oz Incredible cushioning and flexibility for a very responsive ride.