I ended up getting a small, im 5'10" 170 lbs 41inch chest, i first tried the medium and it was WAY to tall, they must size these thing for giant viking type people. The small is perfect i can fit all the layers i need under and is not loose.
I often find when wearing one piece clothing (wetsuits, coveralls and overalls) that when get the right length arms and legs the torso is to short when sitting or crouching, auto-wedgie, this suit doesn't do that. Fit feels nice and athletic, not to roomy but just right, the legs fit a bit looser than the top half which i like
This thing is constructed beautifully, the best, i found no blemishes or mistakes, it is the highest tech piece of gear i own. You could hang it on the wall and call it art. The welded and taped seams look awesome.
The aramid cuffs are heavy duty and kind of point less for me on my snowboard, however if you splitboard these would definitely be effective.
The Legs/Seat fabris is a thicker stretch nylon and the top half feels like normal lightweight stretch Pro-shell. The fabric stretch just barely gives it is sweet and makes for unlimited freedom of movement.
The hood and collar are pretty big. the collar covers my chin and has soft fleece over the zipper, nice on the chairlift in stormy weather. The hood fits over the helmet but limits side to side motion, again not so hot on snowboard but would be cool for skier. Hood has nice adjustments and can be made to fit really tight on your head.
Chest pockets are convenient. the leg pockets are in a funny spot; i put spare gloves in each and the kind of acted like knee pads. the pit zips are nice and long. the arm zip was perfect for magnetic passes.
The wrist gaiters and very smooth and comfortable, the seams an thumb hole are flat welded very stretchy . The leg gaiters are good solid fabric. with nice boot grips, they weren't real tight on my Ride RFL boots but the boots are pretty slim, the would fit nice over heavy duty ski boots
The Nabbi model makes you stick out like a sore thumb on the mountain, great for not loosing your buddies... well they dont loose you.
Im an average snowboarder, not so good in the park but i can ride powder and steeps no problem.
I only got to use this once last year. I was at Alyeska ski resort, near anchorage, for a week durring a huge storm. The Weather was crazy, they probably got 60-70 inches of snow while i was there and a few days it was raining at the base and snowing up top, high winds and few days low visibility. Basically really good conditions for testing a bombproof suit. This is my favorite weather to ride in, sunny days are pretty but the storms just amp me up for some reason.
Thats exactly how i would describe it, bombproof, i never got a bit of snow in the thing, i never got even slightly damp going from rain to snow to rain again. it wears a little warmer than a jacket/pant shell, i found i was just wearing base layers even at night.
It seems very durable, i was rubbing through tight trees and even had one spot where i had to shimmy down a small cliff through tree braches, this thing looked brand new at the end of the week.
Un expected side effect
Like i said earlier i bought the Nabbi color one. i expected to stick out a bit, its pretty flashy, not neons 80s bright but still very solid eye catching colors. DID NOT expect the reaction i got. Every person we ran into commented on it "that is the coolest onesie I've ever seen". My girlffriend spent most of the time in the lodge and she heard people talking about me all day; "have you seen the guy ing the onesie?" It actually got annoying after a while. "thanks man, yes i know its cool, i bought it on the internet, really expensive, must have come out of my mouth a hundred times in a few days. I actually saw another guy up there with one, his was solid blue, i dont think he got the same attention though. I kind of wish i went with the green model just to not be so noticed. However you can be seen and my friends/gf can pick me out on the hill no problem. Might not be so out of place at bigger resorts in the rockies.
Overall if you want to be the most comfortable person on the mountain or want the best of the best kit this is it.