SEAC Rock HD 3mm Rigid Sole Drysuit Diving Boots Rugged, durable diving boot with rigid sole ideal for wearing over the soft boot of a drysuit Great for negotiating coral reefs and slippery surfaces, rocky shore entries, river running, and more Upper constructed of neoprene and nylon Rigid rubber sole with durable toe and heel caps, secure lacing Available in Men's Small to 3X-Large sizes