It is made of stainless steel and ABS. It's design to serve as a reusable straw,which can take place of plastic straws which causes heavy pollution and huge waste of money. A tiny sturdy case comes with the package,you can fold the straw into 4 pieces and put it inside the case. You can tie the case onto your bag or belt as it's like a key chain. You will like to bring it anywhere you go because no need to save space any more. Company logo and name can be imprinted.