"HydraPak® Velocity Reservoir 1.5L: The Velocity Reservoir 1.5L is a lightweight hydration reservoir built for runners and outdoor athletes who need fast, reliable access to fluids during trail running and long training days. Its slim profile sits flush inside running vests and hydration packs, reducing movement and keeping your load stable while on the move. This unisex reservoir is purposefully minimal - HydraPak®'s lightest weight option in the lineup - making it an ideal choice when every gram counts on longer efforts.The Slide-Seal top opens extra wide, so filling with water, electrolytes, or ice takes seconds rather than a struggle. A flexible grab tab allows for quick loading and unloading from any pack, and the PLUG-N-PLAY™ Connect System lets the drink tube disconnect cleanly with an auto shut-off valve that prevents leaking during removal. The COMET™ Bite Valve self-seals after each sip and locks with one hand to prevent leaks between uses. A Universal Hanger works with clips, hooks, and loops across popular vests and packs - including Salomon, Nathan, Osprey, and CamelBak - so the Velocity integrates with most existing setups without modification.Why Our Fit Experts Love It""I took this reservoir out on a long trail run and appreciated how quickly I could refill at the trailhead - the wide opening made topping off with ice water fast and mess-free. The grab tab made pulling it out of my vest one-handed simple, even mid-run."" - Sean, Road Runner Sports Fit Expert, Chula Vista CAWho It's Best ForThe HydraPak® Velocity Reservoir 1.5L is best for runners and outdoor athletes who use hydration vests or packs for trail running, long training runs, or any activity where fast, convenient refilling matters. It works especially well for those who prioritize a lightweight setup and need a reservoir compatible with popular vest brands like Salomon, Nathan, Osprey, and CamelBak. VIP Family members can take the Velocity Reservoir 1.5L for a 90-Day test drive with our Perfect Fit Guarantee."