What Our Gearhead® Experts Are Saying:"This is my go-to piece for shoulder season layering. The heavyweight twill feels durable enough for camp chores but looks clean enough to roll straight into town for a pint."Equally at home in the woods or on a city sidewalk, the Onlooker Twill Shirt Jacket from Topo Designs brings timeless utility to every corner of our lifestyle. Built with 100% organic cotton and a heavyweight twill construction, it delivers that perfect blend of warmth, durability, and classic mountain-town style. Oversized BDU buttons and Topo’s signature custom plaids give it a distinctive look, while functional features like chest and hand pockets add everyday convenience. The satin-lined collar adds a hit of comfort when the wind picks up, and the relaxed fit means it layers effortlessly over tees or thermals when the weather swings. Whether we’re heading out for a crisp morning hike or slipping into something more rugged for the weekend, this piece keeps us dialed and ready.