Mammut

Whitehorn IN Jacket - Men's

What Our Gearhead® Experts Are Saying:

"This jacket is my go-to for cold-weather outings. The 700-fill down traps heat without weighing me down, and the Pertex® Quantum shell blocks wind and light moisture while staying incredibly soft. I love that it’s made with recycled materials—it’s warm, lightweight, and eco-friendly. The fleece-lined pockets are a game-changer when temps drop, and the adjustable hem helps seal in warmth on blustery days."

Winter adventures demand warmth, and the Mammut Whitehorn IN Jacket delivers. Insulated with 700-fill recycled down, this jacket locks in heat while remaining lightweight and compressible—perfect for layering or wearing solo on frigid days. The wind- and water-repellent Pertex® Quantum outer shell offers protection without bulk, keeping us comfortable whether we're braving the city streets or heading into the mountains.

Thoughtfully designed with a two-way front zipper, fleece-lined hand pockets, and an adjustable hem, this jacket balances technical performance with everyday comfort. Plus, with fully recycled materials in both the shell and insulation, it’s a sustainable choice for winter warmth. Whether exploring snowy trails or commuting on cold mornings, the Whitehorn IN Jacket is a reliable layer for staying warm and comfortable.