It has been shown by several studies conducted independently to offer excellent immobilization to one-piece extrication collars as well as to two-piece plastazote extrication collars. It has an ergonomic clamshell design and made of 2 pieces. It is available in 5 phenotype-driven sizes, offering a wide array of neck and height circumference to assure neutral alignment. It is needed in cases of emergency transport and in routine care for patients. The product has a retaining spray for easy application. It is also MRI, X-ray, and CT transparent.