"The Osprey Skarab 22 Hydration Hiking Backpack is a straightforward, comfortable pack with just the right amount of room. This rucksack-style hydration pack features a classic bucket-style design with a wide zip closure on top and an under-lid zip pocket. 2 large external side zip pockets and 2 zip hip belt pockets keep small necessities easily at hand. This Osprey backpack includes a dedicated compartment to house an Osprey Hydraulics LT 2.5L reservoir (included) to keep you hydrated wherever your adventure leads. The ventilated, contoured AirScape mesh back panel provides the structure necessary to evenly distribute the load, plus the cushioning spacer mesh keeps your comfortable and cool. An adjustable sternum strap boasts a magnetic bite valve attachment to keep your drinking tube from flopping around, and a front-panel daisy chain pairs with 2 trekking pole attachment points to make sure tacking on extra gear is hassle-free. The adjustable hip belt is removable for going fast and light, and dual-entry stretch-mesh side pockets hold extra hydration or other compact essentials. On the trail or around town, the Osprey Skarab 22 Hydration pack has your back. Main: 210-denier nylon. Accent: 420-denier nylon. Bottom: 600-denier polyester. Imported. Main: 210-denier nylon Accent: 420-denier nylon Bottom: 600-denier polyester Ventilated AirScape mesh back panel Wide-mouth, classic rucksack design with zip closure and under-lid zip pocket Dedicated hydration compartment with Osprey Hydraulics LT 2.5L reservoir 2 large zip side pockets and dual stretch-mesh pockets Adjustable sternum strap with magnetic bite valve attachment Front-panel daisy chain and trekking pole loop attachments Removable, adjustable hip beltSpecs 20.3""H x 12.2""W x 10.6""D Weight: 1.46 lbs. Capacity: 22L (1,343 cu. in.) Load Range: 10-25 lbs. Frame Material: EVA foam over an Atilon framesheet"