Head Blocks are a foam-filled and light-weight head immobilizer. This device is affordably priced to be disposable, yet durable enough to be reused. The highly visible orange vinyl exterior is both puncture and water resistant, while offering a writable surface for easy ownership and patient identification. Constructed of foam blocks (4" x 5" x 10") sealed in highly visible orange vinyl, complete with handle. X-ray translucent. Not made with natural rubber latex. The foam blocks float making it ideal for use in water rescue situations.