In reply to UKC/UKH Gear:
I've always worn a cycle helmet for snowboarding (it's one of those bmx-style ones - open-face but with good side protection like a jet-style motorcycle helmet). And for climbing too, if someone new was borrowing my climbing helmet. About £25 I think. Can cycle in it and all!
"Rated for sledging"! Great that there's a standard for that now, such an overlooked sport, my vote for Demo Sport in 2022 Winter Olympics! Lookforward to the UKS forum.