This Ice/Water Bladder comes with Quick Release Fittings. It can be detached from the backpack, and freeze in a freezer. Fill water lower than the top line, and lay flat with inlet/outlet on top. You can add alcohol but never add salt to the water.
This Ice/Water Bladder comes with Quick Release Fittings. It can be detached from the backpack, and freeze in a freezer. Fill water lower than the top line, and lay flat with inlet/outlet on top. You can add alcohol but never add salt to the water.