Masters of Insulation | If you're taking on the likes of Toubkal (a peak in southwestern Morocco), or planning alpine ascents, the Neutrino Pro is the lightweight down-filled mountain jacket that will take you from basecamp to the summit and back. This is a technical mountain jacket suitable for winter alpine conditions up to 4000m. The Neutrino Pro uses weather-resistant Pertex® Quantum Pro outer fabric deals with spindrift and snow. With 800 fill power of ethically-sourced hydrophobic down, it