【10mm Stanley Straw covers】--- These straw covers are suitable for all types of 10mm straws, compatible with Stanley 40 OZ tumbler straw and most straws in diameter 0.4 inch. 【Unique Butterfly Shape】--- These cute pink Stanley cup straw covers are designed in vivid Butterfly Shape and initial Personalized letter charm accessory, personalised pink/hot pink Stanley cup accessories for you and your girlfriends. 【Safe Material】--- The straw cover cap for stanley cup are made of Silicone Material, durable, reusable, and can be cleaned by hand or in the dishwasher. Reusable straw topper covers are tight enough not to fall off easily, protecting straw and cup hygienic. 【Good protection】--- The straw cover can seal your straw, could the straw from entering by dust and spittle in the air, and also prevent bugs/debris from entering the water cup, keeps the straw and cup hygienic. 【Easy to carry】--- You will get 2PCS silicone straw covers. These great Stanley cup accessories packaged in a small box, convenient for you to carry on and take with for various outdoor activities such as walking on the street, camping, hiking or other activities. Compatible with stanley tumbler 10mm straws.Made of food grade silicone, these straw lid are durable, safe and non-toxic, reusable, hand washable and dishwasher safe.When you need to leave your drink for a while, these products can protect your drink well and keep it clean.These straw sleeves are perfect for decorating your Stanley cup. Dustproof and splash-proof, especially suitable for outdoor activities.