PATAGONIA MARS DAS PANT L7 LEVEL 7 PRIMALOFT SOCOM ALPHA GREEN Men’s size large These technical pants were originally manufactured as part of the Military Advanced Regulator System (M.A.R.S.), developed specifically for US Special Operations Forces :Color: Alpha Green Layering Level: Level 7 (L7), intended for stationary warmth in extreme, cold-weather conditions. Insulation: Lightweight PrimaLoft synthetic insulation, engineered to retain maximum body heat even if the garment becomes wet. Design Features: Full-length separating side zippers designed for quick on-and-off over heavy boots, an elasticized waistband, and horizontal quilting designed to stabilize the high-loft fill