Sip & SeekTM cups have a unique outer wall that turns to reveal fun surprises. Little ones can glide along with swimming MERMAIDS or romp with UNICORNS, track DINOSAURS through their world and explore strange planets with ASTRONAUTS. While they drink, the double walled insulated cup keeps drinks cooler longer. The TripleFloTM valve easily adjusts to deliver the right amount of fluid to your growing child. Add fun to your child's day with our Sip & SeekTM cups.Luv N Care