Compatible size:the straw covers perfectly compatible with stanley 20&30&40 oz tumbler 0.4 inch straws ,also suitable for all types of straws with an outer diameter of 10 mm 0.4inch. Spill-Proof :share joy without spills ,precisely designed to fit all your favorite Stanley sizes, these straw toppers let you enjoy spill-free convenience, enhancing every shared moment with ease. Cute designs: our straw covers are designed with cute pattern, exquisitely compact and easy to carry around, which adds a delicate aesthetic to your cup. Enjoy your happy leisure time with straw protector. Stylish with diverse options:personalized gifting,available in a variety of colors, these straw caps add a touch of personality to any Stanley cup size, not only ensure personal drinking hygiene but also serve as thoughtful presents, conveying your care to loved ones. Food-grade silicone & healthy material:eco-friendly materials, these durable and easy-to-clean straw covers would be a great gift, they symbolize not only care for well-being but also a shared dedication to preserving our planet. Feature: You will receive 2 Pieces Silicone Straw Tip Covers, Reusable Drinking Straw Covers Cap, Straw Toppers for Tumblers, Splash Proof Straw Tips, Dust-Proof Straw Toppers for 10mm with Stanley 14oz&20oz&30oz&40oz Tumbler Cups Straws. This silicone straw covers cap is very convenient to use,You just need to put it on your straw. Easy to wear or remove,support drop prevention design, easy to clean, After you use it,Rinse with water and air dry naturally to extend service life. Specification: Material: silicone Size: suitable for 10 mm（0.4inch）straws Package includes: 2 x Silicone straw tips covers Wide applicability: These reusable 10mm straw covers cup for reusable straws are great gift for girls,women,and your families,friends,also for your children,i think they will be very happy to receive the cute shape flowers tips,They can be used in many holiday parties: birthday, Christmas day, Mother's day, Valentine's day,They will make our gathering more colorful!