Nothin like divin in a farmer/shorty each of 7mm worht of rubber! That kinda stuff's required up in Buffalo (where I rarely dive) for most of the year. Keeps you pretty warm though. Did my training dive in the spring in an old filled-in rock quarry... 55f at the surface, not too bad. 33f about halfway down. Hittin that thermocline SUCKED. We're workin on a new thermal suit for the navy to aleviate some of those problems, probably won't be available for comercial divers for a long time though ($$$$).