The Quiksilver Cypher 5/4/3 Hooded Chest Zip Hydrolock Wetsuit wasn't made for the casual cold water enthusiast (is there such a thing?), this suit was made for the all-out, holding-nothing-back, go-big-or-go-home kind of person. If you fit that description and you regularly find yourself in water in the 43°- 49°F range, then you're gonna need the Cypher. With a full hood and 5 mm, 4 mm, and 3 mm of neoprene throughout the suit, you're gonna be sad (and chilly) if you settle for anything less than this suit.