For the price offered, you would be hard pressed to get a better piece of home exercise equipment. Xertube bands simply work; you can do 20+ different exercises with them just using the tube and a doorway. For toning arms, chest, and shoulders, these will get you great results. You can get several resistance levels for different purposes; I use these for toning my forearms, and use the purple 'heavy' version for doing curls, shoulders, and chest.