Clear polystyrene boxes containing thin Platilon membranes, ideal for the safe transit of delicate objects. Platilon is a highly elastic and chemically inert polyurethane film which deforms around the object, holding it firmly in place. Available in square, round or rectangular shapes in various sizes. The small square boxes (AGG3319 and AGG3133) have push fit lids. The larger square boxes have hinged lids with locking clips.