The hipbelt hydration pack built for bikers that offers an off-the-back solution to shoulder packs, the Osprey Seral 7 w/ Reservoir Bike Hydration Pack holds an included Osprey Hydraulics 1.5 L lumbar reservoir by Hydrapak with a magnetic bite valve that attaches to the hipbelt for easy access. A pack that doesn’t creep about when you’re riding, the angled breathable airmesh wrap hipbelt contours over the hipbone while compression straps and the ErgoPull cross-body waist strap pulls the pack into the lumbar for a secure, stable, no slip, fit. Sized right, with room for tools the zippered main compartment and hipbelt pockets fit your spare tube, patch kit, CO2 inflator, a tube of sunblock, and, of course, the necessary snack bars, there’s room for the things you need, with no temptation to stuff in things you probably don’t. It’s a lumbar pack for technical terrain and everyday rides for the man who wants his back free but his water readily available.