Smartwool + Arbor 써멀 메리노 베이스 레이어 컬러블록 크루

The flatlock seams really are as invisible as they claim—I forgot I was wearing it during a long hike. The offset shoulders mean no chafing under my pack straps, which is a first for me in a base layer. It's pricey, but the merino feels worth every cent.