The PROOF AltoLoft Insulated Shirt Jacket is the latest innovation in versatile outerwear designed to keep you comfortable on any adventure, from urban streets to rugged trails. This jacket combines form and function with a DWR-treated nylon shell, offering durability and protection against the elements. At the same time, a touch of spandex provides just the right amount of flexibility.
Inside, 40 grams of PrimaLoft insulation—a water-resistant material initially developed for the U.S. Army—ensures you stay warm without feeling bulky. The breathable fabric keeps you from overheating, making it a perfect on-the-go layer that doesn’t sacrifice performance for comfort. Plus, the jacket’s quilted interior adds a layer of coziness, while practical features like zippered pockets and a concealed chest pocket provide ample storage for your essentials.
At $228, PROOF’s AltoLoft Insulated Shirt Jacket is designed with versatility in mind. Whether wearing it on a chilly morning commute or packing it away for a weekend hike, its lightweight and pack-friendly construction makes it a travel essential. PROOF has built its reputation on creating high-performance clothing that doesn’t compromise on style, and this jacket is no exception. The AltoLoft bridges the gap between work, play, and travel, making it an all-weather companion that rises to any challenge.
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