Mastrad Baby BabyCaps Silicone Teat Drinking Cap - Set of 2 Overturned cups in a friend's home, or in public is a challenge any parent of young children has faced. Be prepared and prevent spills and cleanup with Mastrad Baby Drinking Caps! This set of 2 handy drinking caps turn any 2-2.75 in. glass into a spill resistant drinking bottle. Forgot baby?s bottle when out and about? This set of 2 handy drinking caps turn any 2-2.75 in. glass into a spill resistant baby's drinking bottle. The flexible, high quality, BPA-free silicone is easy to stretch and sticks securely to the glass or cup. It is safe for both hot and cold beverages and comes with a carrying box to store the caps in your diaper bag, purse, beach bag, etc. Easy to wash by hand, the case and two drinking caps are dishwasher safe. Turn any cup into a baby's drinking bottle Set of 2 lids can be used with both hot and cold drinks The stretch cap fits snuggly over any container with a diameter of 2 to 2.75 inches Features a built-in nipple on each lid, now you can turn any glass into an airtight bottle Perfect for restaurant use, a friend's house, picnic, etc. Perfect for travel Includes a storage box for taking on the go, or to keep clean while not in use