Tan-Sand Hydration Pack Insulated Drink Tube Cover. Cover and insulate your Camelbak pack drink tube with this hose sleeve. Great for Hot and Cold weather. Good for Hydration Pack Drink tube. Help prevent the drink tube from freezing up or taking a drink of hot water while in the sun. Good for Trekking, Mountain bike pack, North Face Pack, Backpacking, Hiking Backpack, Training Gear, Exercise dear, Weight lifting gear, MMA Training gear, any hydration packs.