Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Major workout!

These heavy-duty weighted bands are definitely a lot more that what you see in the picture! These are WONDERFUL for the legs, and if you do some simple exercises with them, it even exercises the stomach. Great for exercising every muscle in the arms! You can hold the straps and do wrist curls, or (holding the straps) lift and lower behind your head to strengthen that flab under your arm, and any other work outs you can think of. Only problem is, they tend to slip off the arm due to the size of them. However, if you take some of the sand bags out, you can tighten them more, and they are less likely to slip off. Wearing a wrist band (normal, NOT weighted) underneath them, it also aids in them not slipping off. And yes, they do come with workout instructions. But you can be creative, and make up your own. These are amazing, I am SO glad I got them!