Pantaloni termici Zpacks Octa Fleece

The insulation is surprisingly effective for the weight; I wore them under shorts on a chilly morning hike and stayed perfectly warm. They pack down so small it's almost unbelievable for something this warm. Exactly what I needed for keeping legs comfortable without adding bulk under my pants.

Paired these with my hiking pants on a freezing morning hike and stayed perfectly warm without feeling bulky. The fleece fabric is lighter than my old wool base layers while providing excellent insulation. Great for cutting weight in the pack without sacrificing warmth.

Wore these under my hiking pants on a 20-degree morning and my legs never got cold once. They pack down to nothing in my bag and I barely notice the weight. Best long underwear I've owned for winter trips.