Just like the beer koozie, Bladder Insulators will insulate your Geigerrig Hydration Pack Pressurized Engine reservoir or Hydration pack water bladder. These insulators help keep your water cool in the heat and delay freezing in the winter. Insulate your water bladder reservoir before you put it in your pack or carrier. Please see our other listings if you have a different water bladder reservoir. Patent Pending.
Bladder Insulators are compatible with Geigerrig Hydration Pressurized Water Bladder Reservoir - B07C3D37M1