A drinking range that takes the baby from breast to bottle to cup, all in one easy system? we’ve made it. At 4mo+, start with this two-in-one glass training cup, which is fitted with an interchangeable bottle nipple to silicone spout to help ease your baby's transition from breast to cup in their first drinking endeavours. 100% watertight and leak-proof, open or closed or upside down. Use the cup at home or on the go — it has been specifically designed with spill and temperature control in mind. Training cup nipples are interchangeable and made from 100% supple silicone. The handles, which help the baby hold the bottle, can be removed as needed as they grow & gain confidence. Evolves as your child grows, this cup was designed to encourage your little ones' independence while learning to drink on their own.