The Black Diamond BoundaryLine Jacket features significant world-first innovation and technology. This represents the culmination of BD's commitment to unmatched performance and sustainability, offering the ultimate all-mountain component of the BD.SOLUTIONWOOL family. By strategically mapping the Lavalan insulation wool only where it is needed for maximum thermoregulation and moisture management, the BoundaryLine Jacket delivers the promise of performance and protection for high-output aerobic activities. INSULATION: Lavalan wool insulation outperforms synthetics for insulative value due to its natural micro-structure. MOISTURE MANAGEMENT: Wool is hygroscopic and can transfer up to 30% of its weight in water, allowing moisture vapor to move off the wearer through the insulation layer, reduce chill in the down time, keeping them dry and comfortable. Used in combination with our BD.SOLUTIONWOOL baselayer, moisture is efficiently captured and moved out of the system. THERMOREGULATION: Lavalan wool insulation creates a truly active microclimate, enhancing the wearer's natural temperature regulation system due to wool's inherent breathable and exothermic properties. When in a high output activity, the moisture vapor transfer process of sweating creates a natural cooling effect, resulting in an overall reduction of body temperature. After high activity, this same process can generate thermal energy that is transferred back to the wearer to stay warm. NEUTRALIZE ODOR: Wool is naturally neutralizes odor, keeping the wearer fresh even after the hardest high output session.