Features poly-dipped, vinyl coated, large (3-1/2") ear holes for patient monitoring. Fits all concave and flat spineboards. Large pillows provide extra stability and head immobilization. X-ray translucent and safe for MRI/CT scanning. Weighs 2 lb.Dimensions: immobilizer: 16"W x 10.5"L; pillow: 10" x 6" x 5"