Whether you're peak bagging for the afternoon or extending your climbing season deep into fall, the Mountain Hardwear Men's Quasar Insulated Jacket delivers outstanding warmth within a lightweight, highly compressible package. Equipped with a nylon 15D shell and Dry. Q Core 2 layer membrane, the Quasar Insulated Jacket fends off all but the wettest of conditions, keeping you comfortable when you're exposed on long climbs and belays. In addition, the jacket remains fully breathable during sweat inducing activity. Filled with 80 grams of Thermal. Q Elite insulation, this jacket keeps you toasty through sub freezing temps and wet conditions without weighing you down. The Thermal. Q Elite insulation mimics down clusters, trapping heat within a 3D structure of rigid stems and softer fibers. This provides an extremely high warmth to weight ratio that's highly compressible for easy storage in your pack. Additionally, its synthetic fibers continue to trap heat when moisture seeps in, making it a great insulator for damp, rain soaked climates.