Oasis 1100 hydration backpack is a large capacity hydration pack weighing only 2 pounds unfilled. Modern cut, multiple adjustments and ventilated shoulder straps mean all-day comfort, even fully loaded. Includes 2 liter bladder. Three zipper pockets, stash space, and two mesh pouches make this 1,100 cubic inch hydration pack roomy enough for day or overnight trips. The Oasis has a low-profile athletic cut and fits both men and women comfortably. Sturdy and lightweight. Wide mesh straps with ventilated foam and chest shock absorber. FDA-compliant food grade bladder with triple-heat sealed edges, 2″ opening for easy fill and cleaning, kink-free sip tube, cushioned bite valve, and twist-lock to prevent leaks.