Pearl's P.R.O. Softshell 3x1 Jacket is a tunable insulation system that covers a wide range of temperatures. On the outside, Pearl's Softshell Jacket with Cocona fabric is the first line of defense against wind and bad weather. On the inside, the inner liner jacket keeps you warm with lightweight Barrier Lite and Primaloft fabrics. The 3rd piece is a balaclava that stows in the pocket so you're always prepared for changing weather. And of course, all 3 pieces wick and breathe for dry, comfortable warmth and the pieces can be worn individually, too!