Hey, I just bought a used mares isotherm and its a nice suit and looks like its very warm. it is a little tight on me now, but after I loose some 20lbs (trust me I will ) most of my body should be ok. If I put the suit in now, the arms and legs are snug but I can still move them rather comfortably. The hood is what worries me a little, the hood is an attached hood (obviously an older model) and is a bit tight. It isnt squeezing me alot but it is a little excesive. Is there a away to alter the suit, i.e. take it to a wetsuit taylor and have him adjust it a bit. The large would be too big for me. I guess I have a big head...