These silicone tumbler straw toppers add a fun decorative touch while also acting as protective straw covers. Designed to help keep the straw opening clean, they provide a simple way to personalize drinkware while helping guard against dirt and germs. Features Clean Drinking: Protects your straw from dirt and germs Easy-to-Wash: Dishwasher safe for easy cleaning Mix & Match: There are many different straw topper designs to choose from to personalize your water bottle Compatible with any 10mm straws