I am not a fan of the material used, polypropylene. It doesn't seem to be durable at all.
One of my favorite pens to date.
The logo probably should be a little smaller on the towel. Complaints are that the logo is scratchy on the face.
The stability balls seem to be loosing a small amount of air. This isn't a huge problem, but it is inconvenient. Imprint is nice, but very small.