Hey guys. So I received my 3.5mm Cressi Tecnica in the mail yesterday. Got some conditioner and water and slipped it on. It fit, OK. It was too big in the neck and a little bit big in the armpit area. So I jump in my 40-50 degree pool (Fahrenheit). I did a breath hold at the bottom of my pool. I was TOASTY! So I sat in the pool another ten minutes or so, dunked my head in the water, etc.. I was still nice and toasty. I still have a bit of growing to do. I spring dive mainly, 72 degree water. Does anyone think this suit being too big in the neck a problem? It didn't let water flush in. Weird, right? A quick note, if you're planning on buying this suit, it DOES NEED lubricant and water to get on. The metallite material is pretty much the same as open cell. I compared with my dive buddies regular open cell Picasso.