• Safety Commitment: Made from food-grade TPU material, 100% free of BPA and PVC, odorless. It features a leak-proof bite valve design. Simply gently bite the soft part of the mouthpiece and squeeze the soft running water bottle to easily drink water
• Space-saving: The soft flask is compact and durable. When filled, the bottle stands upright and shrinks to reduce movement while drinking. Once the water is consumed, it can be folded into a compact size and stored in your pocket
• Ultra-light: The 500ml runner's handheld flask weighs only 1.3 oz, and the 500ml soft flask with straw weighs just 1.73 oz. The collapsible flask can be stored in the fridge for cool beverages. Recommended usage temperature: -20°C-60°C / -4°F-140°F
• Compatible with hydration vest: Easily fits into most hydration vests, marathon packs, running belts, or backpack pockets. Provides bounce-free stability and flexible water bottle shoulders to prevent chafing
• Instructions: The sports bottle comes with a tea bag. Rinse thoroughly before use. To remove any unwanted odors, shake with water and half a teaspoon of baking soda, or soak with the tea bag, or add a few drops of lemon to neutralize odors