It is a stainless steel straw that works just like a regular one, except you don't throw it in the trash when you're done. Instead, its body collapses like a tent pole and can be stuffed into a carry case with dimensions of 7.3 x 3.3 x 2.7 cm (2.9 x 1.3 x 1 in), which can then be attached to your key ring. With a weight of 2.8 oz (80 g), the straw can be put through the dishwasher, but if it's in need of a spot clean then an included squeegee should do the trick. This works like a pipe cleaner and can be pulled through the tube to drag out any grime that might be building up inside. [Source]