Nuby's Clik-It 2-Handle Silicone Trainer Cup is great for travel and on-the-go sipping. Nuby has designed the Clik-It with a Flip-It top, which features a soft silicone straw that is gentle on children's teeth and gums. The straw features our pressure-sensitive Touch-Flo valve to help prevent drips and spills. The Touch-Flo valve regulates fluid intake as children drink from the straw, opening only with the pressure from their mouth. When not sipping from the straw, the valve closes, ensuring a leak-resistant cup. Its Flip-It top keeps the cup sealed shut, even if little hands knock it over. When flipped shut, the Flip-It top tucks out of the way, keeping the straw clean. Stay spill-free and secure in your decision to take the Flip-It cup on little adventures.