These ab straps are a very good device to use in your workout routine. I really don't like doing ab work, but these are very easy to use and are helpful. They are a good way for targeting the core muscles. The straps are durable and attach securely to a pull-up bar,. Personally, I use them on my pull up bar that is attached to my power rack, which is very stable. The arm slings are padded provide good support during workouts, minimizing strain on the arms and shoulders. However, I found the straps to take a little getting used to at first. They are a little hard on your arms but you get used to them after a while. The straps are also adjustable in length so anyone can use them. Overall, the straps are a valuable addition to any home gym, and I recommend them for core work.