Mimics Big Kids Cup: The training cup mimics the flow of a regular cup by funnelling liquids into the rim for easy free-flow drinking. This helps children learn to drink from a cup like older kids. Water Window: The cup's lid features a unique water window, allowing kids to see the water level as they drink. This helps them learn to judge how much to tilt the cup for comfortable drinking. Interchangeable Design: The cup comes with interchangeable bases and lids, allowing you to switch between the spout, sippy cup, and training lids as your child grows and develops their drinking skills. Easy to Clean: The cup is dishwasher safe, making it convenient for busy parents to clean. Age Recommendation: Suitable for children aged 12 months and older who are ready to transition to drinking from a regular cup. Overall, the B.Box Training Cup is designed to make the transition to drinking from a cup easier and more enjoyable for young children, while also providing parents with convenience and versatility.