The First Years Squeeze & Sip is the easy squeezy way to to teach your baby to drink from a straw! If you're looking to make the move from bottle to straw, this training cup helps little ones learn and then lives on as the perfect size cup for them to sip from. It's simple. Just give the cup a firm squeeze and let them sip. The silicone straw's valve controls the flow. Once they've mastered sipping, the cup's size is easy for little hands to hold and can become the cup they want to take along for the ride. The straw's valve also provides spill control, helping to protect kids and their surroundings from splash outs. At the end of the day, the cup is dishwasher safe for an easy clean.