Built for runners who move fast across gravel, road, and mixed terrain, the Salomon GRVL Skin 4 delivers a close, secure fit with just the right amount of storage. Its streamlined 4-litre capacity keeps hydration and essentials within easy reach, while SensiFit™ stretch construction wraps the body for a stable, bounce-free feel at pace. Breathable mesh fabrics manage heat and moisture, making it ideal for warm-weather runs, long training sessions, and self-supported adventures where efficiency matters. Light, minimalist, and purpose-built, the GRVL Skin 4 disappears once you start moving.