You are looking to purchase a rear retractable cargo net partition with mounting hardware that will fit 1999-09 Saab 9-5 wagon models. This is a rare option here in the USA. There is a nice write up with instructions online. It's very easy to install. It attaches to the back of the rear seat and removes easily just slides on and off. It doesn't interfere with the cargo shelf. The net pulls out and retracts smoothly.