Zip up in cold weather and zip down when it warms up in this year-round favorite, our Merino 150 Base Layer 1/4 Zip. This top uses our lightest-weight Merino fabric wrapped around a nylon core to increase durability, while still keeping the 100% soft, Merino wool you love next to skin. Side seams help minimize chafing while wearing a pack and offer a body-enhancing fit. Select colorways feature a more responsible plant based dye technique. This base layer is comfortable, powerful, sustainable, and, frankly, do-it-all-able.br /> Features • Offset shoulder and side seams designed to increase comfort and minimize chafing • Side seams wrap to front for body-enhancing fit • Flatlock seam construction designed to minimize chafing • Select colorways feature plant-based-dye technique • 8" (20 cm) center front zipper with semi-locking slider • Material Content: 87% Merino Wool, 13% Nylon. Exclusive Of Decoration • Product End Use: Multi-Use • Fabric Weight: 150 g • Fit: Slim.