The Nuby™ Insulated Flip-it™ keeps drinks cooler for longer! The beaker teaches your child to drink upright; encouraging natural drinking action and oral development. The easy to hold base ensures a firm and easy grip. Nuby BPA FREE NO-Spill soft silicone straw features Touch Flo™ Technology which activates as soon as your child puts the silicone straw into their mouth. No Leaks, No Spills, No Mess. All Nuby cups and beakers are supported by Peadiatric dentist Dr. Grace Yum.