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Perfectly compatible:stanley cup straw cover perfectly fits for 9-10mm 0.35-0.4inch large size straws such as Stanley 40 oz / 30 oz tumblers straws.
Material:Our Straw Covers caps are made of silicone that is odorless, non-slip and easy to attach to the straw, which is safe and hygienic for you and your family's health,you can use it with confidence.
Perfect Gift:These great stanley cup accessories. great novel gifts for your friends or family.
Dust and leakage prevention: The straw topper for stanley cup can prevent unclean stuff entering into the straw, clean and sanitary, making drinking more reassuring.
After Sales:If you have any questions about this straw cover cap for stanley cup, please feel free to contact us, any questions will be replied within 12 hours.
8Pcs cute straw cover