Arc’teryx Delta LT Fleece Jacket

This ultra-packable, borderline-ultralight (LT is Arc’teryx-speak for lightweight) fleece layer is one we’ve been wearing almost on the daily this month.

Recently in Colorado, one GearJunkie Editor wore this packable zip-up fleece in 35-degree early-morning weather, up to an overcast 60. Whether she’s walking, hiking, or running, heck, even just sitting in a drafty office — this “jacket” has kept her warm.

The Arc’teryx Delta LT ($149) is made with an air-permeable, synthetic 100-velour Polartec microfleece. Also, YKK zippers and an articulated design. (Specifically, the gusseted arms lend to plenty of stretch — especially great for running.)

She found the Delta LT perfect in terms of breathability, warmth, and fast-wicking powers. And quality touches like smooth mesh-backed zippered hand pockets, a brushed polyester collar, and sleeve pocket just add to its greatness.

She wouldn’t call this a jacket though. Its most valuable features — high warmth-to-weight ratio, packability, and soft microfleece nods her brain toward the term midlayer. Some might even consider it a base layer. Call it what you want: The Arc’teryx Delta LT is worth every penny.

Our team loves the Arc’teryx Delta LT Fleece Jacket and even chose it as one of the Best Fleece Jackets for Women of the year.