The 3-in-1 Men's Featherless Component Jacket features Marmot MemBrain®, a waterproof and breathable outer shell that will keep you warm, dry, and comfortable in unpredictable weather. The removable inner layer features 3M™ Thinsulate™ Recycled Featherless Insulation, which is made with 75% recycled loose-fill fibers that feel just as warm as 700 fill power down, but still perform when wet.