The Mares Classic 5mm dive boots has a new shape and features. This new design is slightly wider than the old boot there fore fitting many more divers, the rubber protection runs further up the boot towards the top stopping the fin from rubbing on the boot and wearing it out. This 5mm dive boot is super comfortable and can be worn all year round. The tough wearing zipper allows easy access on and off and the rubber grip sole is tougher. Ever diver who wears open heel dive fins needs a good quality boot to go in to and if you don't get it right, it could potentially ruin your dive, that's why the Mares Classic 5mm dive boot is a great choice.