STRAW COVER COMPATIBLE WITH STANLEY TUMBLERS PERFECTLY-Perfectly Compatible With Stanley 30&40 Oz Tumblers. 0.4 In/10mm Diameter for A Secure Fit. Enjoy Hassle-Free Sipping Without Worry of Detachment. PACKAGE INCLUDE 4PCS STRAW COVER-You Will Receive 4Pcs Cute Straw Cover Caps With Mini Cup Styling, Delicate And Cute. It Prevents The Straw From Being Contaminated By Dust And Spittle In The Air, Keeps The Straw And Cup Hygienic, Let You Drink With Confidence Anytime. FOOD-GRADE SILICONE STRAW COVER MATERIAL-Food-Grade Silicone Straw Plugs, Bpa-Free And Reusable. Elastic, Odorless, And Easy To Clean By Hand or in The Dishwasher. Enjoy Use With Confidence! PORTABLE STRAW COVER ON-THE-GO KIT-Compact And Portable Design For On-The-Go Use. Perfect For Outdoor Activities Like Camping, Hiking, And More. Makes A Beautiful Gift For Friends And Family. STRAW COVERS is PERFECT GIFT-Ideal Gift For Birthdays, Weddings, And Home Decor. Perfect For Straw Parties And Outdoor Activities. Kids Will Adore The Charming Straw Cover Decorations!