Black Mountain Products (B.M.P.) resistance bands are made from the highest quality rubber to ensure maximum life. This set of resistance bands includes five stackable resistance bands, two handles, door anchor, carrying bag, and exercise manual. This set of exercise bands optimizes the advantage of using any single or multiple (1-5) bands at once to achieve multiple levels of resistance. B.M.P.'s stackable set of exercise bands allow for a much wider range of resistance, (4lbs to 75lbs) then traditional resistance bands sets. Any combination of bands may be used at one time, without the hassles of having multiple handles on each band. This increase in range and ease of use makes this set perfect for anyone from beginners and experts. Stackable bands allow you to achieve the highest levels of resistance possible.