The Naturalfit Transition Cup By Chicco Is The First Step In The Journey To Independent Drinking. The Soft, Satin-Textured Silicone Spout Is Familiar In Shape And Feel For An Easy Transition From Nipple To Spout. Sipping Activates The Flow So If It Gets Flipped Upside Down Or Dropped It Won'T Leak-Perfect For Babies Developing Motor Skills. The Spout Features Dual Valves To Release Air From Cup For Less Air Intake. The Cup Base Has Calibration Markings To Help Monitor Baby'S Liquid Intake. Non-Slip Handles Are Shaped Especially For Little Hands To Hold And They'Re Removable To Practice Cup Holding. Ergonomic Indents On The Cup Guide Baby'S Hands For Picking Up And Holding While Drinking. A Snap-On Cap Keeps Spout Clean When Not In Use. Parents Love The Transition Cup For Its Easy To Clean, Minimal Parts. All Parts Are Top Rack Dishwasher Safe For Convenience.