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 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.