a snowboard
you have boots, bindings and a board then most people just buy snowboarding pants then just wear a hoodie
You need a luge board, a suit, but you shouldn't have steel beams right where you could fly off the track.
skis, boots, helmet, goggles, ski socks, long underwear, warm long-sleeved shirt, mittens or gloves, snow pants, winter jacket, a scarf or neck gator.
a snorkel.