Theraband brand resistance bands are a highly used piece of rehab equipment in most if not all physical therapy clinics around the country. They provide a cheap, effective resistance strength training for a variety of patients of all age groups and physical fitness levels.
My favorite part about these bands is the ease they switch between resistance through color coded bands. the easiest being yellow, up to gold, they are more than enough in their variety to challenge the strongest or weakest in a patient population. They are very easy to use, have a strong durability, they are made to last and be used often.
But there are a few downsides to this product as well. The therabands are not perfect for strengthening past a simple, rehabilitation level. Meaning, if you are looking to train yourself to develop muscle mass and intense strength training, this is not the product for you.
Overall, I highly recommend this for simple strength and resistance training for most people looking for a simple, easy way to start getting in shape.