We think this is the ultimate hydration bladder system. Made by Source®, our premium bladders are BPA-free, use patented anti-bacterial technology, and Glass-Like™ liner, so that you get a product that gives great tasting drinks and long life. We've added our own specifications to make this into the hydration system that best fits our products and the things that our customers will be doing with them. Special standard features include a weave covered insulated drink tube, a lockable bike-bottle style push-pull drink valve with a dirt shield. Dual-fill options allow open-end access or use of a screw-off Nalgene size cap.
Please note: This bladder is recommended for all Eberlestock packs, with the following exceptions and caveats: It does not fit older X1 series packs with the side-pocket hydration (but does fit newer X1s with interior back wall hydration sleeves and top-center hydration tube portal).