"4-Pack Silicone Lucky Straw Covers Compatible with Stanley Tumbler 8-10mm Straws. ● Creative cartoon shape, cute and very decorative. The perfect gift for friends and family. ● Compatible with stanley tumbler 8-10mm straws. ● Made of food grade silicone, these straw lid are durable, safe and non-toxic, reusable, hand washable and dishwasher safe. ● Has a strip that can be fixed on the straw, and it can still be hung on the side of the straw after opening the cover, so that it will not be lost. ● Can seal your straw, so that it can prevent dust when not drinking, or prevent drinks from spilling during moving. ● Please note that there are only silicone straw caps in your package, straws are not included. Package Included: ● 4 x Straw Covers (8-10mm) "