Black Diamond M First Light 1.0 Stretch Vest

For high-output alpine and ski touring days where arm mobility needs to stay unrestricted, the Men's First Light 1.0 Stretch Vest from Black Diamond keeps the core warm without overheating the body. PrimaLoft Gold Active insulation in the chest provides targeted warmth at the core, while a blended merino wool backing adds natural breathability and moisture management in the zones that generate the most heat. A 20D stretch nylon ripstop shell with PFAS-free DWR resists light weather and moves with the body under pack straps and through pole work. A zippered chest pocket provides accessible storage, and the slim, athletic fit sits cleanly under a hardshell or as a standalone layering piece.