Item specifics:The kettle has an adjustable knob at the bottom of the kettle, and the kettle is easily adjusted.Size: 7.3x8.5x16.3cmWeight: about 50 gMaterial: high strength engineering resinIts light weight and compact design makes it convenientIn addition to water bottles, but also can hold Coke cans and other types of drinksIt is really a good companion for your cycling lifePackage Include:1pcs x  Plastic Water Bottle holder