【Cool Straw Cover】 You will receive 10pcs very cool basketball themed straw covers with a 0.4" (10mm) inner diameter, compatible with stanley 30oz/40 oz tumbler straws and most of 0.4" (10mm) diameter drinking straw tips. Please confirm the diameter of the straw before purchasing. 【Unique Design】These basketball themed straw caps features rich styles, easy to match with your most cup, can decorated straws more cute and make cup straw more interesting. 【Prevents Spills and Keeps Drinks Clean】The straw topper for stanley cup can seal your straw, prevent dust from entering when not drinking, or prevent drinks from spilling when moving, small and portable, you can take it anywhere, such as party, camping, hiking and other outdoor activities. 【Reusable Straw Tip Covers 】Made of food-grade material, no smell, soft and can be used for a long time.Plus, the straw cover is easy to clean and hand washable and dishwasher safe. 【Widely Used 】 The straw cover cap for stanley cup, also fit pencil topper decorations. You can share these cup straw accessories with your friends, family, a great choice for family or party gifts. 【Reusable Straw Tip Covers 】Made of food-grade material, no smell, soft and can be used for a long time.Plus, the straw cover is easy to clean and hand washable and dishwasher safe.