New! Spout Stage Progression Teaches Your Child to Drink from the Rim of a Cup. Soft Spout 6+ Months. Integrated spout offers a smooth transition from a standard "O" shaped nipple to a "U" shaped tumbler cup rim. Dentist Endorsed. Soft Silicone Spout for Easy Transition from Bottle. Cover Keeps Spout Clean for Better Hygiene. Easy Grip Handles. BPA Free. Spill-Proof The NUK® Easy Learning System is a line of cups designed to progress with e.