FeaturesErgonomic slider redesigned with no sharp edgesSlide-Seal™ top opens wide for fast filling and closes tight for a leakproof sealFlexible, non-kinking 36" HydraFlex drink tube provides a steady flowHigh-flow Blaster™ bite valve self seals after each sip and features a twist on/off bar to prevent leaks when not in usePlug-N-Play™ connect system lets you easily disconnect the drink tube (an auto shut off valve prevents leaking) and remove the reservoir from your pack for convenient refillingEasily attached reservoir in your hydration pack with included pack clipFully reversible for easy cleaning and drying, top-shelf dishwasher safeMade of lightweight, abrasion resistant TPU & RF welded seams for superior durability and elasticityWide working temperature range (can be frozen - max temp 60° C / 140° F)Safe and reliable, 100% BPA & PVC