Patagonia Men's Nano Puff Hybrid Jacket is a technical insulating layer that focuses on keeping you warm. If jackets had to go to college to specialize in an area of expertise, then this puppy would have a doctrine in Efficient Warmth. PrimaLoft® ONE synthetic insulation is baffled in a brick pattern on the front and back torso and the tops of the arms to keep your more exposed areas toasty. The remaining parts of the jacket (the sides, lower torso and underside of the arms) are high-loft R2® fleece which provides stretchy insulation and great coverage and mobility. Textbook temperature protection.
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