- Package includes 2 soft hydration flasks (500ml/16oz each) for optimal convenience. Ideal temperature range: 0-60℃. - Constructed from food-grade TPU (thermoplastic polyurethane) that is BPF-free. This material ensures safety, durability, and lightweight portability while simplifying cleaning. - The soft flask design enhances your hydration experience, enabling quicker access to water. It features a robust bite valve with a dust cover, ensuring a leak-proof seal and easy drinking through the silicone mouthpiece. - This foldable water bottle is designed for easy transport whether empty or full, making it perfect for use with hydration running vests and waist belts. Suitable for everyone—adults, children, men, and women. - Use it during outdoor activities such as running, hiking, or biking to maintain optimal hydration levels. Its compact form allows for effortless storage in bags or pockets. - Perfect for various scenarios, including long-distance running, trail adventures, or casual outings, ensuring that you stay refreshed no matter where you go.