The Thermobelt PRO blue 4KAAD has a double isolation to keep your sports drink warm during sports and training. Silicon insert in the tab for anti-dropping.Upper pocket for mobile phone, ski wax or energy bars. The volume is 1L fluid, cold and warm ( max heat is 70C)

The Thermobelt PRO blue 4KAAD is very popular by Worldcup athletes in cross country skiing and Biathlon. It is easy to carry.

NEW: special upper elastic mesh for more storage.