2.Hygiene & Convenience: Made from high-quality materials, our flat water bottle provides a safe and hygienic way to stay hydrating. Its flexible design makes it sturdy and not easily breakable, giving you peace of mind when you're outdoors. 4.Seal of Security: With the Flat Water Bottle's advanced silicone sealing rings, you can be sure of a leak-proof seal, giving you peace of mind every time you tighten the lid: no more worries about water damage to your items. 1.Carry Conveniently: Save space and stay hydrating anytime, anywhere with this flat water bottle's easy-to-hold square design. Store it in the side pocket of your backpack or handbag for convenient access to hydration outdoors. 3.Boost Productivity: Our flat bottle's moderate 500ml capacity makes it the perfect partner for maintaining children's daily water needs and adults' hydration after single exercise while ensuring convenient portability. Make hydration a habit and stay healthy. 5.Hydration Management: Keep track of your daily water intake with ease using the clear scale that displays outside of the cup body. The volume scale is visible for convenient monitoring, helping you manage hydration levels with scientific .