The Saucony Progrid Triumph 8 running shoe provides the most plush ride ever. Incredible cushioning and flexibility for a very responsive ride. Ultimate transition from heel strike to toe-off. UPPER: Forefood lock down weld - Locks the foot to the midsole and provides a secure fit. Neutral Arch-Lock® - Lightweight, stretch materials in the arch area that extend to one eyelet and adapt to your foot to provide a snug midfoot fit. Hydrator Lining - Saucony's performance apparel fabric that provides next-to-skin comfort and maximizes wicking. Comfortride Sockliner - Saucony's exclusive open cell foam sockliner. It is antimicrobial and breathable while providing superior cushioning and ride. HRC Strobel Board - Increases cushioning and step-in comfort. MIDSOLE: Full-Length ProGrid™ with Respon-Tek™ - Saucony's latest cushioning technology, ProGrid™, absorbs impact, dissipates shock and provides a seamless transition from heel through forefoot. SSL (Saucony Super Lite) EVA - Our most advanced EVA blend that maximizes rebound and durability while minimizing weight.SRC Impact Zone - Provides shock attenuation and sets the foot up for a smooth transition. Impact Interface - Cushions and isolates heel impact. OUTSOLE: Blown Rubber - Lighweight flexibile material provides added cushioning while maintaining durability and a smooth ride. XT-900™ A carbon rubber outsole material that offers exceptional traction properties without sacrificing durability.