what is the different between these 2 neck collars philly collar patriots blue and philly collar emts gray?

Question

the patriot collar has blue and white chins white velcro and white velcro straps the chins are snapped by a air machine unlock the locks for adjustable settings the emt collar has white chins white velcro and white velcro straps the chins are snapped by hand yellow locks and white labels for sizing

Answer 1

The amount of support the collar gives, and also how much immobilisation of the neck is required.