These are by far amazing!! I have utilized other bands before but these have redefined the way I feel and look at resistance bands! The many different variations for added resistance as opposed to having to utilize a certain band is absolutely genius! The Caribbeaner clip and single pair design is fast and flawlessly designed! Switch resistance in and out in a flash and you are good to go! The space saving, weight avoided and durability is PERFECT if you're looking to get your money's worth while getting the most out of a home workout... such as P90X!!! Highly recommended! :)