The Contoured Hydration Bottle fits comfortably in the small of your back while the freeze-free cap remains ready to replenish you with essential fluids. Large enough for necessary provisions for multi-hour excursions, the Storm is great for serious training or casual fun in the sun or snow. 1 liter contoured hydration bottle with freeze-free capThinsulate bottle compartment keeps fluids hot or coldTwin zippered pockets on waistbeltAirmesh moisture-wicking backing 1.5″ wraparound waistbeltShock cord compression/accessory attachmentHeadphone portOne size fits all Item SpecificationsColorGray/BlueReservoir Size33.8fl ozComments2 zippered pockets

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