Energy Blade Outdoor: Engineered into the forefoot area of the bottom unit, Energy Blade is a lightweight TPU plate works in cohesion with the soft and springy midsole to filter the ground and deliver a smooth, dynamic stride. Fuze Surge: Made up of one of our softest EVA compounds and 30% natural rubber, Fuze Surge foam is pillowy for instant comfort and responsive enough to keep rebound levels high. Engineered using less artificial polymers, this midsole compound delivers a more earth-conscious, smooth yet dynamic stride. Reverse Camber: Inspired by Salomon's ski heritage, this curved midsole geometry helps you feel like you are floating over the ground. Worn twice. A bit to big for my foot