Are you in search of a hydration solution that doesn't sit on your back? Look no further than the Osprey Seral 7 lumbar pack. Complete with a 1.5-liter lumbar reservoir and magnetic bite valve that attaches to the hip belt for effortless access, this pack is designed for ultimate stability. The compression straps pull the pack into your lower back and wrap around your hips, keeping it securely in place even on challenging terrain. In addition, the zippered main compartment and hip-belt pockets offer plenty of space for your cycling essentials, while the AirScape back panel with contouring lumbar wrap ensures maximum stability. Included with the pack is an Osprey Hydraulics 1.5 L lumbar reservoir by Hydrapak, making it the perfect choice for your next ride.