The large hoop is 15 inches and is great for those large projects where you want to see more of the pattern you are working on.
This hoop still travels well and fits in a hooking bag nicely.
The medium hoop is 13.5 inches and is the perfect all round hoop, good for large and small projects.
The Tux hoop was designed to give more grip, than the wooden hoops, which helps to keep the backing taut. Both the inner and outer bands have a textured surface, so you don't have to constantly tug on the backinng to keep a firm work surface. There is no ridge so your loops don't get crushed.