Firediver
Contributor
On thing I found that helped me keep warm in my 7mm one peice contempo semi dry is wearing a lycra tank-top and spandex shorts. I also wore neoprene socks inside my booties. I have used the Bare 7MM ARCTIC SGS FULLSUIT and found I was warm and little water flushed in the suit because of the rubber seals in the calfs,wrists, and neck. But you can't wear a tucked hood because you will break that seal. A friend who used to dive the same bear suit used to tuck little heat gel packs under her armpits and by her hips. The Henderson's Gold suit http://www.hendersonusa.com/product_goldcore.html have a reflective lining that reflects your body heat back to you. They are a great suit for the price, and will last you a long time. I have since upgraded to a drysuit the underwear I wear is all fleece clothes from MEC. I wasn't going to spend $200+ on a one peice Hally rather have more options of layering and alot less bulk.