I love my bombshells! I own a bombshell jacket and loved it so much I bought these bibs. I wanted something I could go through deep Utah powder in and not get snow down my shorts. These are awesome! The bib keeps out all snow -even after a ridiculously gnarly biff- The only thing I want to stress on is that you need to wash the bombshell jacket (as with all shells) to keep their waterproof rating accurate. Dirt particles get trapped inside the fabric and decrease it's integrity. Washing with some Nikwax TX Direct Wash In (type NIK0038 into the Backcountry search bar above) will keep these bibs brand new! I paired mine with the patagonia capilene 2 bottoms and stayed warm all day boarding in the SLC mountains.
I'm 5'11" 180#s, I went with the Medium and love the sizing!
Bottom Line: If you enjoy freezing cold showers, avoid these. If you enjoy staying warm and dry, these are for you!