Cell | Membrane Protection Storage BoxThe 'Cell' is a transparent, polystyrene shell with two highly elastic and chemically inert polyurethane films (membranes) inside which forms around your timepiece, holding it firmly in place. Designed to securely store your watch, whether travelling, at home or storing in a safe deposit box, the Cell can be stacked and the transparency of the boxes allows you to quickly locate your watch. The cases can also protect against the effects of oxidisation.