Need an everyday pack for any activity? Don't sort through random bags for "something that will do". The Peak is a snug, ideal hip pack for hikes, bike rides, and anything in between. This hip pack has secure zippered pockets for plenty of storage...yet doesn't weigh you down. Your phone, a few snacks, and more will fit nicely in it. We love the tailor-made SpeedDraw Flask because it fits perfectly and holds a whole 18oz of your drink of choice. Details 18 oz / 535 mL Ergological™ SpeedDraw Flask Push-Pull Blast Valve cap offers quick bursts of fluid Angled bottle holder allows easy one-handed access Bounce free ride Extended side panels hug the body comfortably for a perfect fit Expandable zippered stretch pocket keeps essentials protected Easily accessible zippered pocket External shock cord system for extra storage options Pocket fits most large-format smartphones 30% Polyester/70% Nylon Weight: 7.62oz / 216 g