Can not say enough good, both about the product AND ShapEx as a company. As far as the bands go, so far so good. The weight equivalents I prefer to think of as just a guide...When tension goes up, so does the "weight" you're getting out of them. I CAN say that I skipped gym today, did my whole workout with ShapEx bands and in the end, did NOT feel like I skipped the gym at all. Flexibility of exercises weight etc all sucked me in to a full workout vs just my planned "test" of the product. For the price its affordable, fantastic product!