The Hibernate: Sunken Blue colorway brings a rich, moody plaid to the trusted warmth of Patagonia's Men's Fjord Flannel Shirt. Made from heavyweight 100% organic cotton, this long-sleeve flannel is built for everything from fall weekends to winter layering. The brushed cotton fabric feels incredibly soft against the skin, yet it holds up to daily wear and tear. Buttoned chest pockets add utility, and the relaxed cut makes it easy to wear over a base layer or under a vest. Whether you're settling in for a fireside evening or stepping out into crisp mountain air, this colorway adds a deep-toned, seasonal vibe to a workhorse favorite.