Hydration pack Drink Tube Cover. Good for Camelbak, Blackhawk Hydration and many other Hydration Pack Water Bladder Drink Tube. These hose sleeves help protect the drink tube. These cordura covers will also slide over neoprene insulated drink tubes for added protection and prevention of snags to the neoprene. Many uses for those who are Hunters, Military Personnel, Police, Airsoft, Paintball, and many others. Hydration Tube Covers for you Hydration Packs. Great for concealing, camouflaging, and protecting the tube. Fits over most neoprene tube covers. Fits most packs.