The eco-friendly rainbow collapsible straw is made from food-grade 304 stainless steel, FDA Approved, plastic free, dishwasher safe, reusable and environmentally friendly. A perfect gift for kids, family, friends. It has 3 adjustable sizes, perfect for most of cups , bottle and wine glass tumber. The colorful telescoping metal straw comes in an aluminum alloy case specifically designed to keep it clean and handy. An attachable keychain can help you tie the case to your belt or bag. You can carry it with you wherever you go. Our reusable drinking straws come with telescopic cleaning brush which is long enough to clean the whole straw. It can easily clean coffee and beverage residues in the straw.