DESC: DesignHuge access screw-down port makes filling and cleaning very easy. This hydration delivery system fits all of our specified packs and is a hands-free way to stay active.FeaturesAnti-Microbial polyurethane materialHeavy duty RF welded construction for unmatched reliabilityTaste free, odor free and UV stable designMicrowave safe and freezer safeUS and international patents pendingFDA approvedVolume100 oz. (3.0L) reserviorItem #WHB-100Retail Price$24