[ Functional Water Bottles ] 1. Hidden drinking nozzle gland for clean and hygienic drinking experience, isolated from external pollution. 2. Large-opening circular design for quick and easy replenishment of moisture, takes only 8 seconds to pour all the water out. There's easy to open and easy to drink. 3. One-piece hook design for easy hanging on backpacks. It can be operated with one hand. [ Safety & BPA FREE ] 1. Made of TRITAN, a BPA-free material for safe drinking. 2. Cup mouth made of food-grade silicone. 3. Cup cover wrapped with silicone material, with a rubber seal autospout for 100% leakproof experience. [ Easy to Clean & Easy to Use ] 1. Simple design with no complicated internal structure or built-in straws. 2. 7 cm wide diameter for easy to clean with a brush. [ Utility Scenarios ] 1. Suitable for all ages, including adults, students, parents that for comfortable and assured drinking experience. It's pretty color water bottles for different peopl