Piyo Piyo - 4 - Step Traning Cup Set An ideal training assistant to help baby learn to drink liquid through a broader mouthpiece than nipple before he/she can use a cup. Made of soft TPR the mouthpiece does not hurt baby''s palate and gums. The flat duck-build shape and size perfectly fits into baby''s mouth.� Step 1: Nipple-style training cup for 3 months and up Step 2: Step duck-billed training cup lid� (cup not included)�for 4 months and up� Step 3: Straw style training cup lid for 8 months and up Step 4: Broad-opening training cup lid (cup not included) for 8 months and upFeatures: This set of training cup set will last it for your baby from 3 month to 5 years old Ergonomic Curved Handles Watertight ring to prevent water leak perfect for baby shower