The DELTA 5MM has a sturdy but flexible outsole and good rubberized protective armor, yet it still feels light on the foot. Built-in arch support and a full cut create a comfortable, cramp-free fit, even for wide-shaped feet. The reinforcement on the top of the foot provides both cushion and protection against the edge of the fin pocket. The DELTA 5MM's upper provides lots of overlap with a wetsuit leg and the zipper is backed by a gusseted water dam. The aggressive anti-slip tread is non-marking, a feature boat owners will like. A flexible boot that offers a lot of protection and comfort, the next time you're diving cold water or traversing rocky shorelines, you'll be glad to be wearing your DELTAs.