Cups by Contigo. Details:Description Running around the house, playing dress up, and sipping yummy drinks with a straw—super fun for kids. Cleaning up drippy spills? Not so much fun for busy parents like you. Enter the Leighton Tumbler. The straw on this unique tumbler has a spill-proof valve that opens when your child drinks and closes automatically in between sips, so it’s pretty amazing. The easy-clean design easily comes apart for thorough cleaning and it’s top-rack dishwasher-safe. And because cold drinks are more fun than lukewarm ones, the vacuum-insulated stainless steel design keeps drinks icy cold for up to 13 hours. BPA-free. 12 oz. size. For ages 3 and up.