What materials are drysuits usually made from?

Just as with wetsuits, the dry suit is made from a variety of materials although Neoprene is the best.  With a dry suit, two design options are available to include the shell suit, which is made from vulcanized rubber, trilaminate, or coated nylon that has been pressed between two layers of nylon.  Regarding wetsuits made from Neoprene, the choice would be standard Neoprene or in some cases, crushed Neoprene.  Depending on the manufacturer, some will make the dry suit in the same way as the shell suit.  Both are good options but many divers prefer the shell suit because it is easier to don and off, and it is not as constrictive.