Some parents start introducing a sippy cup or straw cup to their babies around 6 mths of age. This can make it easier to transition from breastmilk or bottle feeding around 12 mths of age. Most paediatricians recommend babies 18 mths or older use an open sippy cup rather than a bottle, so anytime before then is fine. This is why we have a 4 in 1 sippy cup, so that you don't have to purchase seperate products as your baby moves through the stages of learning how to swallow and drink. To shop the Little Mashies silicone sippy cup, check out our baby feeding range here.