The Large Changing Bag from Vello makes it possible to handle light-sensitive material when it isn't possible to get to a dark room. Three layers of light-blocking fabric provide a roomy area for changing out stuck or damaged film. Spool film onto a loader in 26 x 28-inch darkness while the Touch fastener and zippered closures block any extra light from coming in. The two elastic cuffs further prevent light leaks around your arms allowing you to work in darkness inside the bag.