Available to purchase separately for fitting to most backpacks that are hydration ready, the Caribee 3L reservoir is a quality piece of gear. This premium reservoir is also supplied as standard fitment in the Caribee Nuke 3L Hi Vis hydration backpack Volume: 3L Made from PEVA material that is BPA, Phthalate and PVC free Innovative fold top reservoir with slide lock closure for quick filling and easy access for cleaning Quick Release, non-leak, tube removal function allows quick and simple fitting and removal from your pack Fully insulated drink tube to help reduce external thermal effects High flow mouth piece with "bite" on/off flow function Mouth piece dust cover.