Double Thermal Protection: Insulated cover shields the drink tube and bite valve from freezing or overheating, keeping water temperature stable in any season
Snug Universal Fit: Fits most 1.8 cm diameter drink tubes—compatible with popular hydration packs. Flexible design ensures a secure, slip-free fit
Double-Layer Insulation: Durable outer shell with soft thermal lining adds an extra layer of protection for extreme hot or cold environments
Easy Zip Design: Smooth zipper makes installation or removal quick and simple. Keeps your hydration tube clean and easy to access anytime
Lightweight & Packable: Weighs only a few ounces—adds no bulk to your gear. Ideal for running, hiking, cycling, skiing, and other outdoor sports