jonnythan:
I'd like to see a comparison of the insulation in there to Thinsulate.
It might be difficult to do a comparison as there is little information to be found on the fibre pile that Helly-Hansen uses. Best I can suggest, is try one out. I'll try to dig some some more information on the material. There's plenty out there on Thinsulate, but none on the HH Fibre Pile.
Judging by what I've read on HH's website, the Spiez uses their W-Pile Fibre Lock material (the best they have to offer), which uses the same principles as Thinsulate.
The W-Pile uses spun nylon or texturized polyester filament yarn. Thinsulate is made of polyester and polyolefin fibres.
Here's a link describing the material.
Helly-Hansen Fibre Pile
JeffG:
and how would it work when the suit is flooded.
Well, I didn't have a full flood, but I did have a partial flood (my first ever) a few weeks ago when diving Lake Superior. Water temperatures were a chilly 40F as the lake must have turned over.
I had a leak from the crotch down my left leg and behind one of the gillpads. I had one HECK of a booter. My entire abdomen and left leg was soaked, and I poured a few litres of water out of my suit at the end of the dive.
At any rate, I was able to dive comfortably and warm enough to continue for another 30 minutes before completing my safety stop and trudging out of the water. What REALLY amazed me, was that I started to sweat after getting out my suit despite the cool air temperatures, and how quickly I was dry after getting the suit off.