When the clothing wizards over at Trew Gear made the Men's Polar Shift Insulated Jacket, they knew you'd love it so much you'd want two. Rather than make you buy double the jackets, they simply made it reversible instead. To keep you warm, Trew Gear added 60g PrimaLoft One synthetic insulation throughout the jacket. This insulation is extremely compressible and allows the Polar Shift to be compressed down to the size of a water bottle, making it ideal for throwing into your pack as a maybe I'll need it insulating layer. The double ripstop nylon shell is durable, and plenty of pockets give you all the storage you could want.