Prevent water from splashing or splashing too quickly when drinking. Improve people's drinking water comfort. Bottle cover seal no side leak Sealing rubber ring, waterproof Flat bottom place firmly -Replace plastic water bottles with reusable glass water bottles . It is 100% recyclable and free of harmful chemical contaminants used in plastics. -The ability to hold hot and cold liquids simultaneously without melting or warping, the carafe is more efficient at keeping your beverages at a stable temperature. If you're worried about accidentally breaking it, we're a product with a silicone protector to keep the bottle from shattering and breaking.