With its unique zip design, mounted on the upper surface of the bag instead of around the lower edge, This prevents the Zip from damaging the lower rail edge of the board, an all to common problem for some designs of bags.
A "Heat Reflective" panel is incorporated on the underside of the bag, this helps to lower the temperature in the bag when exposed to sunlight, thus preventing permanent damage to the glass on the board and stopping the wax from melting all over the inside of the bag.
