Our straw covers are made of stretchy silicone which is no stitching make it less likely to break and more beautiful,which fits the straw better and easier to put on and off the straw lid, it also reusable and washable. The straw protector can effectively prevent your drinks from viruses,insects, dust, and water splashing, suitable for various outdoor activities, like camping, hiking, or enjoying a day at the beach. The straw cover cap has a protruding design inside, good sealing effect which can be tightly matched with sizes of straws 8mm,and can also perfectly match various Stanley tumbler cup (30 & 40 oz) and other kinds of cup. Our straw plug with small size and light weight, will not take up much space, suitable for various occasions makes- Made from pvc material, measuring 1.3*1.3 inches, this custom straw cover cap. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. Customization available: Print your logo or customize packaging and color schemes. Product Highlights: Portable, durable, practical for daily use.