This insert is crafted of burgundy/ dark red felt and comes with five patch pockets. It is awesome to provide protection for the inside of your Jumbo bag and offers structural support, as well. It was placed inside a bag I ended up selling, but it was never actually used. The approximate measurements are 11.75” in length at the widest part of the top and 2.5” wide. As you can see, it forms automatically to the interior shape of the jumbo.