I'm actually thinking about getting some because I live in the east and after throwing big tricks then falling on the ice hurts real bad. I found some good one's on www.skiershop.com but I dont know how comftorable they are.
The best ones i have seen at the red crash pads. All the pads are removable and you can put exoskeleton pads on the hips, gives you alot more confidence learning stuff on rails for sure.
ive got some but the ass pad is always going down and it doesnt fit with your pants cause the shorts are too big but its good when you plan to throw hard tricks