Spinal collars are used by paramedics to keep a patient's head, neck and spine still. This is done in cases where a patient is at risk of a spinal injury where movement could result in spinal cord damage, leading to paraplegia.
Spinal collars come in a number of different sizes in order to fit different size people. Paramedics also have an adjustable spinal collar that can be fitted to a number of sizes.
These are used by both Advanced Life Support and MICA paramedics.