Turn your regular cups into sippy cups with Boon SNUG Straw + Cups. Each lid fits over any regular cup with a 2.5"-3" diameter. This is a great way to prevent spills. With this handy set, you'll never run out of sippy cups again.
Use Boon SNUG Straw and Cups to prevent spills
Set of 3
100% plastic cup/100% silicone lid
Attaches to most regular cups with 2.5"-3" diameters