The optimal midlayer or baselayer for alpine endeavors in demanding conditions. Made with Regulator grid fleece for outstanding stretch, breathability, compressibility and durability in the backcountry.

Sunrise to sundown, from epic approaches to alpine traverses, the versatile R1 Pullover stretches, breathes, moves moisture and insulates. And it is the best it has ever been: We collaborated with Polartec to fine-tune the high/low interior grid polyester fabric (Polartec Power Dry) into an exclusive that's more breathable and compressible and has an improved feel and increased durability, while still maintaining its warmth. Sized to accommodate light underlayers, it works as a stand-alone top or as a light midlayer. With a smooth, microfiber face for easy layering, offset shoulder seams for pack-wearing comfort and a zippered chest pocket.