FEATURES of the Arcteryx Men's Proton LT Jacket Fortius Air 40 outer fabric with DWR treatment layers easily and effectively balances air permeability with wind and water resistance Coreloft Continuous 65 insulation in the body and arms Collar height provides coverage when worn without a hardshell External pockets: Two insulated hand pockets and single external chest pocket No Slip Zip works like a series of speed bumps keeping the main zipper from self-opening, dual back flaps prevent wind penetration Dual hem adjustments seal in warmth Trim fit for athletic performance Articulated elbows and gusseted underarms Stretch-knit cuffs Chest pocket with zip Insulation: Lightweight and highly compressible Advanced material technologies balance wind, weather and thermal protection

• Fortius Air 40 outer fabric with DWR treatment layers easily and effectively balances air permeability with wind and water resistance
• Coreloft Continuous 65 insulation in the body and arms
• Collar height provides coverage when worn without a hardshell
• External pockets: Two insulated hand pockets and single external chest pocket
• No Slip Zip works like a series of speed bumps keeping the main zipper from self-opening, dual back flaps prevent wind penetration

Fortius Air 40 outer fabric with DWR treatment layers easily and effectively balances air permeability with wind and water resistanceArcteryx