Overall, this is a really nice binder, especially for the price. It's fairly light and if I wear it the right way, I can wear it all day without their being an issue. The cotton panel on the inside is a plus. This is my first Underworks binder, and I wear it almost daily.
However, I do have some issues with it: first, it bunches up at the bottom and digs into my ribs, which leads to aching pretty early on. I have been able to prevent this by flipping the edge up about a half an inch, but I wish it didn't do it at all. Second, as another reviewer pointed out, it has weird scratchy/poky bits on the seams and under the arms. However mine has softened up a good deal. Lastly, the cotton pulls the binding fabric back, creating a weird bump at the top, which can be seen, and also rubs more scratchy bits on my skin.
Despite all this, I believe that this is a great binder, and good for everyday use.