Salomon Soft Flask 400ml/13oz Insulated 42 Unisex Hydration Accessories, Ideal Temperature, Comfort on the Move, and Versatile Practicality, Blue

The dual skin insulation reduces heating in summer and prevents freezing in winter. Pressing the bite valve eliminates ice in no time at all The soft, flexible bottle adapts its shape to your bag and thus guarantees extra comfort. When drinking, it becomes smaller so that the water does not swing too much Dual-skin insulation limits heating in summer and stops freezing in winter, while the bite valve evacuates ice build with a quick squeeze.