What Our Gearhead(R) Experts Are Saying:"I use this as a midlayer when I'm moving fast on the trail-it's warm without feeling stuffy, and the grid fleece breathes really well. The thumbholes are great for keeping sleeves in place, and the chest pocket sits high enough that it doesn't interfere with a pack strap. Super reliable for cool-weather hikes."On the days when the trail rises steeply and the air cools quickly in the trees, we rely on the Triple Canyon Grid Full-Zip Fleece II to keep our pace steady. Columbia's grid-pattern fleece delivers warmth that never feels heavy, letting us climb, cross ridgelines, and settle into a rhythm without overheating. The moisture-wicking Omni-Wick fabric keeps sweat from lingering, helping us stay dry even during long, uphill pushes. The technical details support movement from the first step to the last overlook. Flat seams reduce friction under pack straps, while thumbholes keep sleeves anchored during quick scrambles or breezy descents. Zippered pockets secure essentials, and the woven chest overlay adds durability where it's needed most. Light, breathable, and purpose-built for motion, this jacket layers easily or stands alone when the weather cooperates.