DoorJamms are made of synthetic rubber and come in a variety of colors.

Available unmarked for use in private or civilian environments or labled for emergency service use. It is versatile, stretches over 200% its original size, reusable, easy to carry and weather and chemical resistant. The DoorJamm will withstand temperatures as hot as 212° Fahrenheit and as cold as -40° Fahrenheit. The product weighs approx. 1 ounce. It can be stored nearly anywhere and allows you to carry multiples without being cumbersome. 

This version of the DoorJamm is perfect for household use. It could be used in industrial and trade settings, wherever you might use a wedge or other device to keep a door from locking. Plumbers, electricians, janitorial, housekeeping and maintenance workers say that DoorJamm works for them too!