36” (inch) Water Bladder Drink Tube Insulation Cover Hydration Tube Insulator fits many Drink Tubes Flexible, Durable, and Easy Installation Fits over bare drink tube up to 1/2" Diameter. Veteran Owned Business and Made in the USA Insulate your hydration pack drink tube. Compatible with Camelbak, Osprey, Geigerrig, Platypus, Hydrapak, Source or any Hydration pack drink tube. Keep your water the right drinking temperature in various weather conditions. Insulated drink tube cover is composed of a flexible neoprene insulated material, which is great for protecting your drink tube from heat exposure or cold temperatures.****Check out our Amazon store for additional hydration accessories Hydration Tube Covers.