Do they need some kind of swim/wet suit to keep them warm or is the swim nappys enough? My LO is 12 weeks and we've already been once which he had just the nappy on. The water wasnt as warm as i thought it would be and he looked a little cold. I kept his body as much as possible under than water but is a wetsuit really necessary? i didnt get one before because they were all a bit big. This time iv got him one of those yellow float seats and am thinking his body may be more out of the water than when i was just holding him before meaning he'll be even more chilly than before. My OH thinks its ridiculous to buy one but just wondered what you all do?