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For added protection that feels like we're wearing nothing at all, we snap on the Trango Halo Helmet. The thin nylon webbing is ultralight yet burly, while the multiple adjustment points let us find a perfectly customized fit that won't slip, shift, or loosen as we climb. Outfitted with breathable padding and constructed with 20 air vents, this helmet keeps us nice and cool under the relentless desert sun. And when the sun sets, the rear elastic strap and front clips help hold our headlamp in place for some nighttime sends.