I've had these bands for over a year. They are still in great shape after being used about 5 times a week. I love the option to "stack" them which allows you to increase your resistance as you get stronger. The ease in using these in the door make this a perfect option for anyone with out a large room to exercise in and ideal for someone traveling. They are easy to use and come with a guide that tells you how much weight each band equals in case you forget. Definitely worth the purchase price!