Jamm Products specialise in innovation for the home. Our first product was the Jamm door-stop. This door stop is great for child safety and pet safety, it's unique design means it's non-slip and unmovable by little hands, providing a great finger guard. Our second product was the egg-roller. This simple but effective invention keeps eggs fresher for longer by rotating them each time one is taken from the roller.
I have purchased your door jammer from Amazon. Works perfectly and is a very good idea.