ProTEK Crew Seating is a truly flexible and modular Crew seating system which offers unrivalled flexibility across most types of military vehicles, bringing superior ergonomics and protection to new levels. It can be fitted directly to vehicle walls or via a Stack System™, which allows the use of blast units designed to attenuate to STANAG 4569 AEP-55. Basic seats can be upgraded to blast protection without the requirement of replacing seats. Optional side protection for body and head are easy to integrate. All seats are M1 rated with integral harness seat belts for maximum safety. The Stack System™ enables vehicles to be multi-functional as the seat can be removed quickly to allow Stretchers, Communication/Command/Utility pods to be fitted onto the same mount. Stack System™ can be fitted to any vehicle, even those with angled hulls.