There's not much to say about Rubber bands other than if they don't break they're working.. What I found interesting is the huge variet of shapes and sizes available at Staples
This is the right size for most uses. The bands are not particularly thin or thick. It has been my go to sized band for decades. This is the first time I have used the Staples brand though and they are just fine. I did find a few bands are super tight at first but once they are used they seem to gain elasticity.