I needed a way to secure my helmet after leaving the drag strip. It would roll around in the back seat and hit the sides on quick turns. I had a left over trunk net from another car, so I printed up a seat belt insert with holes for small carabiner clips. I put the helmet in the netting, clip it with the carabiners and buckle it into the back seat now. It still moves a little while cornering but the netting holds it from banging around the back seat.