Compatible: Unlike most straw caps on the market, this straw cover is specifically designed for stanley cup straw. You don't have to worry about the wrong size, perfectly compatible with stanley 30&40 oz tumbler with handle straws.Material: unlike ordinary PVC material straw covers cap, our straw covers cap is BPA free, and there is no unpleasant smell, you can use it without worry, cleaning it is a breeze.Leak-proof: prevents the straw from entering by dust and spittle in the air, and also prevents mosquitoes from entering the water cup, keeps the straw and cup hygienic.Precisely: fit stanley large straws with a diameter of 9-10mm 0.35-0.4inch.a variety of cute straw cap decorations can be freely paired with Stanley cups, and can also distinguish between family and friends' straws.Package: 6PCS Christmas gift Santa Stanley cup straw cover decoration,Good choice for a gift,this mini cup stanley cup straw cover,It looks very cute, easy to put on and take off when using, the main thing is reliable quality.Great novel gifts! Great for your friends or family.