The Amazonman Compact Reading Rack is made out of Clear High Impact Plastic. You’d have to fun it over with a car to break it! It fits most exercise machines that have a console/display. Now you can exercise and read at the same time! No Assembly Required: Just take it out of the box and use it! . the secret to a perfect treadmill book holder is just like shopping for clothes ,you would never go in looking for a pair of jeans and only look for the lowest price , same with a book holder ,measure your machine and measure your favorite books/magazines ,check out all the different sizes of book holder also look at the amazon custom made holders for a few dollars more you can get an exact fit , wouldn’t that be great to get custom fit jeans for 19.99 .