Hiking pack meets hydration pack in this simple, lightweight, and rugged Osprey Skarab 18 Hydration Pack. A classic yet contemporary rucksack design with a straightforward bucket-style opening makes packing and unpacking easy. Osprey’s tried-and-true AirScape foam suspension and backpanel provide comfortable support and ventilation, while an included streamlined Osprey Hydraulics® LT 2.5-liter reservoir covers your hydration needs anywhere you go. Good news because the Skarab is fully at home on the summit of a mountain as well as your local river trail.