Special PE adjusted at 3 positions can be penetrated by X-ray,CT Scan ,or MRI CE approved Adjustable Cervical collar for children It can be adjusted at 3 positions accordingly.Can be penetrated by X-ray,CT Scan ,or MRI.Compatible with spine board and head immobilizer.CE approved. Technical parameters:Material:special PEPackage:60 pcs/Ctn Package size:52*47*41cmG.W:10 kg