The Osprey Seral 7 has everything you need for a day on two wheels, with Tardis-like storage and a smooth-flowing hydration system.The 1.5-litre Hydraulics Lumbar Reservoir features a 180 degree on/off bit valve that gives you a smooth, fast water flow whilst minimising leakage. The hose's ergonomic design contours the shape of your back and has a magnetic fastening meaning it stays securely in place until you're thirsty.The ventilated AirScape backpanel with foam ridges prioritises airflow, so you'll barely notice that you're wearing a pack. A ventilated mesh hipbelt with compression straps on both sides ensures a tight yet comfortable fit, making sure your pack stays stable and secure as you ride ... More info