The Seac Alien 3.5mm Men's Wetsuit is one of Seac's most premiere wetsuits. With Glued and stitched seams you can rest assured that the suit will hold up to just about anything you can put it through. The 3.5mm is ideal for temperate waters but the added warmth from the extra .5mm and all the added technology of the suit you can also take it into cooler waters