Here is an interesting web site I ran across a while back - I went and found it - here is the link:

http://www.michigan-sportsman.com/fishing_articles/ice_fishing_safety_tips.htm

ebay has some:

http://search.ebay.com/search/search.dll...=immersion+suit
"The sea, once it casts its spell, holds one in its net of wonder forever." Jacques Yves Cousteau