Nuby™ BPA FREE Gripper cup features a soft silicone spout with Touch Flo™ Technology. Touch Flo™ Technology activates as soon as your child puts the spout into their mouth. No Leaks, No Spills, No Mess! The 2 handle cups soft silicone spout helps in the initial cup drinking stages. Nuby™ silicone spouts are are soft on tender gums and recommended by paediatric dentist Dr. Grace Yum. Nuby™ spouts are easy to clean, easy to use and easy to assemble unlike other cups that have lots of small parts to fit together.