A well made bamboo straw is long-lasting, and cleaning is easy! All you need is to rinse them out under the tap after everyday use or shake in a jar of warm soapy water if you like. Every month or so, you can boil a pot of vinegar water mix and soak the straws for a few mins if you want a super thorough clean! Since these straws are made from plants, most of them decompose naturally in a commercial compost facility or in backyard compost. - Size: 5-7, 7-10, >10 mm - Lenght: 20 cm - Packing: 4000 pcs/ Carton.