What Our Gearhead(R) Experts Are Saying:"I keep a canister in my pack for high-altitude days, and a few breaths genuinely help me catch my wind on steep climbs. It's unscented too, so it doesn't clash with anything else I'm carrying."Thin air has a way of slowing down a good day outside, whether that's a long approach at elevation or a string of flights before you even reach the trailhead. Boost Oxygen Unscented is built for those moments, small enough to toss in a pack or a carry-on without adding weight or fuss. There's no scent to it, no chemicals, just clean supplemental oxygen ready whenever the air feels thin. After a few breaths, it's easier to keep moving, keep talking, keep enjoying the trip instead of catching up to it.