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.
The IEEE symbol for the cubic foot is ft 3. The following abbreviations are used: cubic feet, cubic foot, cubic ft, cu feet, cu foot, cu ft, cu.ft, cuft, cb ft, cb.ft, cbft, cbf, feet 3, foot 3, ft 3, feet/-3, foot/-3, ft/-3. Larger multiples are in common usage in commerce and industry in the USA: CCF HCF Centum, or hundred, cubic feet; i.e., 100 ft 3.