Osprey Katari 3L men's hydration backpack with 2.5L reservoir. When the name of the game is keeping hydrated, Katari is the ideal pack to carry. Built with a focussed feature-set and performance-based shape, this pack is made to move with you during warm weather activities. Housing an integrated 2.5L Hydraulics LT reservoir while retaining a great fit and comfort, these packs help to push your limits. A small, streamlined design and stable fit keeps your water where you need it, even when your movement speeds up. An innovative, ventilated mesh harness, back-panel and webbing sternum-strap lock the pack down to your back, while the bite-valve is always within reach thanks to the innovative magnetic sternum strap, which can be opened and closed with one hand, while never taking your eyes off the trail. A top scratch-free pocket can store your sunglasses or phone without risk of damage, as well as a separated pouch and clip for your keys. The LED light attachment point and reflective graphics can give you peace of mind in darker conditions.