Features:1、Hidden drinking nozzle gland, clean and hygienic. Isolate the environment from external pollution. 2、The large-opening circular design provides quick and easy replenishment of moisture. It only takes 8s to pour all the water out. 3、Water bottles make a one-piece hook design, which can be hung on the backpack. , Safety: 1、The bottle used TRITAN (BPA FREE). 2、Cup mouth: Food grade silicone. 3、Cup cover: the cup cover is wrapped with silicone material, and the rubber seal leakproof. The water bottle is the best to use. , Easy to clean: 1、Water bottle is simple with no complicated internal structure, no straws built-in. 2、7 cm wide diameter, easy to go deep into the brush for internal cleaning. , Utility Scenarios:1、The water bottle is marvelously suitable for all ages no matter children, adults, as well as the elderly that everybody is allowed to use it freely with one hundred percent assuredly comfortable. 2、Easy to carry on including:Outdoor sports activities, travel, cycling, indoor activities, daily routine drinking and diet. , 100% quality assurance. It can be changed at any time in the process of use or unsatisfactory color. We always aim at the needs of users and continuously improve our products!