It comes with basically everything you need except the scissors needed to cut the string. Here, Colgate Hydris proves to be a superior option. Problem is I havent been able to wear them much for our weather has turned warm. I bought my son the size he normally wears and they were 1 size to big but we kept them and after a couple months they fit and he loves them! These are the perfect size , exactly what I wanted, slides easy over the needle and the eye. It does state a max of 55lbs so please keep this in mind; I took off front wheel to reduce the load and insure its continued success! Others have stated the dramatic drop in speed going through this device, I have found this to be true. The TT-BA-07 is small, light and easy to set up, once I figured out how to pair it to my LG earbuds. I couldnt decide which one to buy so I got them both at the same time. Much better than the Arctis driver.