The collapsible straw is made food-grade 304 stainless steel that can stand against scratch, rust and crash. The foldable straw is BPA-Free, FDA Approved, plastic free, reusable and environmentally friendly, safe to drinking. The flexible corkcicle straw comes with brush, packed into the aluminium case, which is retractable and lightweight. You can tie the straw keychain onto your bag or belt or pocket and take it anywhere, such as family gathering, cocktail party, picnic, etc. Comes with extra long collapsible cleaning brush, you can clean the inside of the reusable straws from top to bottom easily, dishwasher safe.