Safe Materials: Made from 100% food-grade silicone – BPA-free, non-toxic, odorless, and environmentally friendly. Reusable, it provides complete peace of mind; unlike glass, it is highly impact-resistant and easy to clean – simply rinse it under running tap water. Foldable Design: With an ultra-thin, foldable design, it takes up minimal space and is extremely easy to carry, allowing you to drink from your own personal cup anytime, anywhere – a safer and more hygienic choice. Perfect Leak-Proof Seal: This foldable water bottle is designed with a high-quality silicone seal. Even if the bottle is overturned or shaken vigorously, no liquid will leak out. The seal is airtight and reliable, ensuring no leaks. You can safely store it in your backpack, hiking pack, gym bag, or any other type of luggage. Large Capacity: The bottle holds 600 ml. Carrying 600 ml of water is not an excessive burden compared to bulky bottles, yet it provides sufficient hydration to replenish fluids during your outdoor workouts. You can hydrate and recharge your body anytime, anywhere. It is ideal for outdoor activities, cycling, camping, and much more.