It’s hard to convey the feeling of hurtling down a mountain at speeds faster than most cars travel on the highway to those who haven’t tried it. That’s what head-mounted cameras are for. V.I.O.’s POV.HD cam is among the best on the market, a small, rugged capture device that you can lash to your dome and use to capture the mountainscape as it flies by in glorious 1080p high-def visuals. The POV.HD is shockproof and waterproof, and it can be mounted on either your goggles or your helmet. What’s more, the four AA batteries required to power it eliminate any concerns about the cold weather harming a Li-ion rechargeable battery.