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. Cute designs: our strawberry 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. 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. Quantity: This pack includes 4 individual silicone straw covers for your convenience. Material: Made from durable, food-grade silicone, these covers are safe for drinking and easy to clean. Feature: You will receive 4 Pieces Reusable Drinking Straw Covers In strawberry design, This Straw Toppers is for Stanley Tumblers(14oz&20oz&30oz&40oz), This silicone straw covers cap is very convenient to use,You just need to put it on your 10mm straw. Our straw caps are suitable for both hot and cold drinks, are easy to clean and maintain, and do not pose a choking hazard to children. They are very child-friendly and made of high-quality silicone, which is practical and durable. They are compatible with below brands tumblers: -compatible with Stanley Quencher H2.0 14oz&20oz&30oz&40oz -compatible with Simple Modern Tumbler30oz&40oz -compatible with Beast Tumbler 30oz&40oz -compatible with Hydrapeak Voyager 40oz Stainless Steel Tumbler with Handle -compatible with Meoky 40ozoz50oz Tumbler with Handle -compatible with Yeti Tumbler 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. Material: Food Grade Silicone Size: suitable for 8~10 mm straws （not that pefect fit for 8mm straw） Package includes: 4 x Silicone straw covers