Fieldline Pro Series Treeline DayPack Features: Extra large main compartment; Roomy secondary compartment with organizer; Ultra quiet zipper pulls; Front pocket with zipper closure MOLLE equipped; 2L hydration reservoir compatible (reservoir sold separately) Yoked shoulder strap System with Adjustable sternum slider; Side compression straps to balance packed gear; Deluxe padded back; 1 inch waist belt for added support Left and right elastic mesh pouches perfect for storing water bottles Measures 18.3 by 12.3 by 8.1 inches; 28.2 liters; Backed by lifetime manufacturers warranty Roomy secondary compartment with organizer Ultra quiet zipper pulls Front pocket with zipper closure Molle equipped Left and right elastic mesh pouches perfect for storing water bottles Side compression straps to balance packed gear Extra: hydration compatible (reservoir not included) Yoked shoulder strap system with adjustable sternum slider Deluxe padded back 1 inch waist belt for added support