Bubble wrap was invented in 1957 by two inventors trying to create 3D wallpaper. It consists of air-filled bubbles that provide cushioning for fragile items during shipping. Bubble wrap comes in various bubble sizes depending on the item and needed protection level. It is made of polyethylene film bonded to form air bubbles. Beyond packaging, bubble wrap is enjoyed for its satisfying popping sound and there is even a Bubble Wrap Appreciation Day. It has many innovative uses beyond packaging like insulating windows and protecting plants.