FatIvan Lightweight Folding Door Chock.Introducing the new FatIvan®, the evolution of the door chock. FatIvan® was created out of necessity. Firefighters are tired of carrying wedges that rarely work or having bulky pieces of welded angle iron hanging out of their pockets. Firefighters are done having doors close behind them or getting their hose lines pinched under doors. Firefighters want a door chock that will work on any door hinge and also fold up and disappear in their pocket when not in use. This does it all. You now have a tool that allows you to chock any door with a hinge and you will NOT have to bend over to insert or extract your tool. Just put FatIvan® in the hinge you feel most comfortable reaching. The bottom, the middle, the top, it doesn't matter. Your FatIvan® will work on any of them.