Boost Midsole foam in heel for walking comfort and energy return. Soft EVA foam in forefoot provides smooth transition and comfort. Dual-Gusseted tongue for added comfort. Advanced Puremotion Outsole with strategically placed adiwear traction to improve stability, grip, and performance. TPU saddle, external heel counter and bonded overlays for additional lateral stability and support. Lightweight and stretchable upper features bonded PU weld for added protection and durability. Climaproof technology provides protection from the elements. Molded cloudfoam sockliner provides great cushioning, support, and comfort. 2 Year waterproof guarantee.