Loading... Please wait...Use a Fishpond Waterlog Hydration Reservoir as a water bladder for your Fishpond packs. Each bladder has a big opening to make it easy to fill, empty, and clean. The long hose hides nicely into the strap of your Fishpond pack and pops out in perfect postion to keep you hydrated all day long, and without having to slow down a step. Other features include an anti-microbial polyurethane material that is also taste free, odor free, UV stable, and FDA approved. Microwave and freezer safe