"Wedge" side: shove it in the hinge side of an open door, twist it, done. The soft outer shell keeps it from slipping and the hard inner core props the door in an open position.
"Claw" side: grips the edge of a door to prevent it closing all the way.
Integrated oxygen wrench:built into the wedge, so it's already in your hand when a tank needs cranking
Optional hi-vis glow tag:spot it in the dark, grab it on the way out, leave nothing behind
Made to order. Allow 3-5 business days before shipping.