"Salomon® Cross 4: The Salomon Cross 4 is a lightweight hydration pack designed for runners, hikers, and cyclists who need to carry essentials without excess weight. Built as a vest alternative, it combines intuitive adjustments with stability to keep gear secure during movement, whether you're tackling trail running, bikepacking, or day-long exploration. The pack accommodates a 1.5 liter reservoir for sustained hydration on longer efforts, and it also works with 500ml soft flasks, giving you flexibility to choose your hydration setup based on distance and terrain.A padded back panel provides comfort during extended wear and helps distribute weight evenly across your shoulders, so you stay comfortable even as the effort increases. The lightweight design means you can move freely without the bulk of a traditional backpack, while the intuitive adjustment system lets you dial in a secure, stable fit quickly. Whether you're running with a full reservoir or switching between soft flasks, the Cross 4 delivers the carrying capacity you need for day-long adventures without unnecessary bulk.Why Our Fit Experts Love It""I took the Cross 4 on a half-day trail run with some elevation gain, and the padded back panel kept everything comfortable even as I worked harder. The pack stayed stable throughout, and switching between the reservoir and soft flasks gave me flexibility I didn't expect."" - Sullivan, Road Runner Sports Fit Expert, Naperville ILWho It's Best ForThe Salomon Cross 4 is best for runners, hikers, and cyclists who need a lightweight hydration solution for trail running, bikepacking, day hikes, and outdoor exploration. It works well for athletes who prefer a vest-style pack over traditional backpacks and want the option to carry either a 1.5 liter reservoir or soft flasks depending on their distance and terrain. If you value comfort on longer efforts and want a pack that stays stable without weighing you down, this is a solid choice. VIP Family members can take the Cross 4 for a 90-Day test drive with our Perfect Fit Guarantee."