Foweroty 6|12 Pack 0.4in/10mm Straw Toppers, for Stanley Straw Covers Cap for Tumblers for Stanley 14|20|30|40|64 Oz Cup, Silicone Dust-Proof Caps（ Cup is Not Included）, 6 Pack

Straw Cover: Suitable for the straws with a diameter of 0.354"-0.394" (8-10 mm)

Wide Range of Application: Straw covers work with Stanley cups, and most other straws

Premium Material: Made of premium silicone, durable, reusable, and easy to wash by hand, dishwasher

Nice Looking and Practical: This straw cap is simple, stylish and very practical. Keep dust and mosquitoes out of straws and cups. The style is simple, suitable for all groups and genders

Food Grade Material: Made of food grade silicone, the straw cover is durable, reusable, and easy to hand wash or dishwasher clean. They are sealed, dust-proof, splash proof, and very suitable for outdoor activities