Mastrad Baby BabyCaps Silicone Straw 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 cup. This set of 2 handy drinking caps turn any 2-2.75 in. glass into a spill resistant cup. The flexible, high quality, BPA-free silicone is easy to stretch and sticks securely to the glass or cup. There is a hole in the center of each lid to secure a straw for your child to sip from. 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 lid to hold a straw 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 There is a hole in the middle of the lid for inserting a straw; now you can turn any glass into an airtight cup 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