Okay, that looks odd, but on a practical note, he'd be highly visible at night. That silver suit would reflect rather well and would keep the sun off in the day.

I'm curious where you'd look to get something like that actually, looked around for something that's hooded and long-sleeved/long-legged, the best I've seen seems to be bibs (which are sleeveless), or skinsuits (which come as long-sleeve but not long legs), neither of which are hooded so the back of your neck cops it from the sun.