The Beaba stainless steel straw cup is perfect for taking your baby's drink on the go and for keeping it fresh. It will keep the tea, milk or water warm or chilled, as the double wall reduces loss of heat/cold, and isolates the outer wall making it more comfortable to handle. This sippy cup with straw is 100% watertight, it does not leak, even when the lid is open. It is fully dismantable, so easy to clean and hygienic to use. The Beaba 250 ml baby straw cup enables young children, from 8 months, to learn to drink on their own!