The reason they call a photo cube a light tent is that it allows you to compensate for low natural lighting by placing your lights near the object that you are photographing. These look like collapsible tents and they allow you to adjust lights and angles to get the best image possible within the smallest amount of space. Tents are also easy to store because they can be broken down and placed in a small storage space.
Using a Light Tent for Advertising
Advertising photographs need to be very specific. Companies want you to draw attention to specific features of their products so you want to be able to control everything from the background to the lighting. With a light tent you will be able to accomplish all of these details without having to purchase expensive backdrops and large studio lights. The adjustable lights also allow you to take pictures from any angle, giving you the best view of any product.