What Our Gearhead(R) Experts Are Saying:"I wore this fleece on a trip through the Oregon Cascades and it was clutch for cold mornings that warmed up fast. The Polartec material is super soft but breathes well, and I appreciated the lack of shoulder seams when I had my pack on all day. Definitely a versatile layer I keep close on any trip."We know how fast conditions can change on trail, and the Nike ACG Wolf Tree 1/2-Zip Top keeps us one step ahead. Part of Nike's Wolf Tree collection and tested in Oregon's rugged terrain, this fleece was built with adaptive layering in mind. Inspired by the dynamic environment around Smith Rock, it's designed to keep us comfortable as we move through shifting temps and terrain. Crafted from Polartec(R) fleece, it provides exceptional warmth-to-weight performance and breathability that shines during aerobic pursuits or stop-and-go hiking. Thoughtful touches-like seam-free shoulders for pack comfort, zippered hand pockets, and a vent-ready half-length zipper-make it easy to wear all day without compromise. From alpine trailheads to high-desert crags, this fleece is our go-to for moving through wild places in comfort.