Compatible with left and right hose ports. Stretchy side pocket fits most water bottles. CAPACITY: 35 LITERS. WFS TACTICAL DAY PACK The WFS 35 Liter Tactical Daypack is the ideal sidekick during your daily commute, travel or hiking. Its water repellent design features a large main compartment for gear, a soft lined protective device pocket, a small accessory pocket for flat item storage and a zippered front organizer pocket. It is hydration compatible with left and right hose ports. A foam back with various air channels and breathable mesh increases air flow to help prevent heat build-up and sweating. Bottom of the pack features 2 grommeted drain holes. Side compression straps allows for decreasing size when the bag isn't full.