Explore any playground in the Salomon Aero Blaze 4 GRVL GTX! This neutral running shoe provides waterproof protection and smooth transitions. Enjoy a comfortable fit in the breathable engineered mesh upper. Feel an energetic bounce during your runs on the optiFOAM2 midsole. The rocker geometry provides smooth transitions, while the Gravel Contagrip® outsole moves effortlessly between surfaces. Waterproof yet breathable, the Salomon Aero Blaze 4 GRVL GTX owns any terrain! What's New? Engineered mesh upper improves breathability while providing waterproof protection. quickLACE™ neo system provides a precise fit. Who's it for? Neutral runners who want a versatile daily trainer to wear during uptempo efforts and road miles. Shoe Technology Upper: Breathable GORE-TEX membrane keeps your feet dry during your adventures. Soft lining creates a smooth step-in feel. quickLACE™ neo system offers a secure, customized fit. Midsole: optiFOAM2 absorbs shock from every step for a responsive ride. Rocker geometry maintains pace while providing smooth and fluid transitions. Outsole: Gravel Contagrip® provides durable traction on gravel and paved roads. Chevron lugs offer multi-directional grip for improved footing on soft surfaces.