This is a great product.  I have a rotator cuff problem in both shoulders.  So, I was looking for a set of resistance bands that would give me a mild to moderate work out.  The yellow and blue bands are perfect for my needs.  They are just the right tension.  Furthermore, changing the bands is a snap.  The grips are great, too, and the entire set can be packed in the zippered bag that is included with the purchase.  There are many band sets available.  I think I made the best choice!