DESIGN: Dark gray raccoon-shaped silicone straw cover, specially designed to fit for Stanley 30 and 40 oz cup straws with 10mm diameter COMPATIBILITY: Custom-fit topper accessory for Stanley tumblers, providing a secure and snug fit on reusable straws FUNCTIONALITY: Acts as a straw cap stopper to protect straw tips and keep debris out while adding a cute decorative touch MATERIAL: Made from durable silicone that's safe for beverage contact and easy to clean SIZE SPECIFICATION: Precisely designed with 10mm opening to ensure proper fit on for Stanley cup straws 1 Pc Dark Gray Raccoon Straw Cover for Stanley 40and30 Oz Cup Cute Straw Topper for Tumblers,Silicone Straw Covers Cap for Stanley Cup Accessories Straw Cap Stopper for Reusable Straws Tip Lids（10mm）