The Mountain Hardwear Compressor PL Jacket is perfect for alpine climbing and superlight backcountry lovers. It features Primaloft One insulation, giving you a warm, lightweight insulating layer. The Compressor PL provides excellent warmth to weight ratio, compresses easily, and insulates when wet. The laminated cuff tabs, fleece lined pockets and interior zip pocket make the Compressor a convenient and comfortable piece. The Compressor is specifically designed for backcountry pursuits where moisture and weight are factors.