Exceptional featherweight insulator! - Arc'teryx Nuclei Hoody - Men's

This is my first piece of Arc'teryx gear, and I'm extremely pleased with it. Perfect detailing, a very trim, almost-tailored fit, great hood design, and it's amazingly warm & comfy for the weight (my XL weighs under 11 oz). I'm a lanky 6' 5", 220 lbs, and the XL fits me perfectly. I've got room underneath for a midweight layer, but it's streamlined enough to fit under a hardshell. I love the extra long sleeves and drop hem in the back.
It is warmer & less breathable than the Atom LT, but that's a plus if you're using it as I am - primarily as an outer layer in cold, windy conditions while hiking, hanging out in camp, apres ski, or around town. I wouldn't use this for high-extertion activities unless it's really cold; it will not vent well enough. But it is versatile and breathable enough for moderate activity in cold conditions.
I've tried midweight insulating jackets from Stoic, First Ascent, Patagucci, Montbell, and Flylow, but this jacket easily beats them all (for me).

This review was written in the old system and had content requirements that are different than reviews written today.