Mini Ace adjusts to infants, pediatric and small neck sizes with 12 settings as well as the 3 standard sizes- infant, pediatric and neckless.  Latches allow the rescuer to size the collar according to the patient's neck size.  Two safety buttons hold the collar in place for maximum reliability.  Stores flat.  Radiolucent, CT and MRI compatible.  Extrication collars.  Adjustable collars.  C-collars.