The Lightning X Perfect Fit Adult Adjustable Extrication Cervical Collar (LX-COLLAR) is a professional-grade cervical spine immobilization device designed for EMTs, paramedics, and first responders operating in ambulance, trauma, and emergency care settings. This rigid extrication collar helps maintain proper neutral alignment of the cervical spine while limiting lateral movement and anterior-posterior flexion or extension during patient transport, extrication, and routine care. Designed as a single adjustable collar that replaces multiple adult sizes, the LX-COLLAR features 16 precise size settings covering four standard adult collar sizes. Its intuitive sizing system allows responders to quickly measure, adjust, and lock the collar in place for a secure, symmetrical fit. The high-visibility fluorescent yellow color improves on-scene recognition in low-light or high-stress environments, while the radio-translucent construction ensures compatibility with CT, CAT, and MRI imaging without removal. The collar also incorporates responder-focused features such as a flip-down chin piece for flat storage, airway access, and vomitus management. A ventilated posterior shell allows for fluid drainage, while oversized openings provide easy access for pulse checks, cervical palpation, and advanced airway procedures. Compact storage and fast application make this adjustable cervical collar an essential component of trauma kits, ambulances, and emergency response bags.