Neck braces are used to provide stability of the cervical spine after neck surgery, a trauma to the neck, or as an alternative to surgery. They are probably the type of spinal brace you most commonly see people wearing. There are several types available, including:
The cubic foot is an imperial and US customary (non-metric) unit of volume, used in the United States, and partially in Canada, and the United Kingdom. It is defined as the volume of a cube with sides of one foot (0.3048 m) in length.
A cubic foot is the equivalent of 1,728 cubic inches (since a foot is twelve inches, a cubic foot can be imagined as a cube with sides of twelve inches, or 12 x 12 x 12 one inch cubes stacked together). In practice, cubic feet and cubic inches tend to be distinct units that would not be used together.