Large capacity hydration pack weighs only 1.3 pounds unfilled. Modern cut, multiple adjustments, and ventilated shoulder straps mean all-day comfort, even fully loaded. Could add 70-ounce bladder. Three zipper pockets, stash space makes this hydration pack roomy enough for day or overnight trips. Low-profile athletic cut with full adjustment fits both men and women comfortably. Sturdy and lightweight. Wide mesh straps with ventilated foam and chest shock absorber.