The arms, neck and leg seals/gaskets are neoprene about 2mm? with smooth skin inside and nylon on the outside, not the thin stretchy rubber on most dry suits. I suspect that they will last a few years at least. Probably more durable than my wet suits. I guess there is the possibility of being too tight or too lose at the wrists, neck and legs, but the only complaint I have heard from one of my buddies is that the neck was a little tight on him.
Formula 160; iSonic 111; HiFly Move 105; Tiga 263; '85 Mistral Superlight.
Maui Sails TR 11.0; 9.2; 8.4; 7.6; 6.6; Maui Sails Switch 6.0; 5.2; Maui Sails Global 4.5; 4.0.