Deuter Streamer Tube Insulator

"The Streamer Tube Insulator from Deuter is the ideal solution to prevent liquids from freezing in the drinking tube of your hydration system in cold temperatures. This clever insulation is suitable for both men and women and can be easily attached to the shoulder strap of your backpack with a Velcro strap. Thanks to the practical Velcro fastener, attaching and removing the neck protection is quick and easy. Whether you are hiking, cycling or doing other outdoor activities, the Streamer Tube Insulator ensures that you can access your liquid supply at any time without having to worry about frozen hoses."