This a cross between a back padder and a lumbar back padder.
The beauty of this is that you can just order and attach it yourself.
It is made with the spacetec fabric used on our back protector pads and gull wings. It fixes directly onto your bergan by threading through the loops on the back of your bergan and then placing the waist straps though the loops on the padder. The design provides protection where it's needed whilst still being removable, so you can swop it between bergans too! You can also attach water bottles onto your waist straps.