Disposable! Prevents cross-contamination. Keeps image receptors clean and dry from exposure to bodily fluids, solutions, plaster, etc. Specifically designed to fit your imaging receptors. Non-sterile. Latex-free polyethylene bags are available in 2mil and 4mil and are transparent to x-ray. Can also be used to cover positioning sponges. Available in Standard Overlock/Flip-lip closure and Ziplock.