A heavyweight merino base layer top with a unique jacquard pattern fabric, the 250 Vertex Long Sleeve Half Zip Sedimentary is a go-to layering piece for skiing, snowshoeing and other cold-weather pursuits. The super soft and breathable 250gm jacquard fabric is made from 100% merino wool, and the classic half-zip design makes for easy layering and quick temperature regulation. Gusseted underarms increase range of motion, while flatlock stitching and offset seams throughout makes for a soft next-to-skin feel. The all-over graphic print draws inspiration from the geologic layers of the world's mountains.

Inspired by nature, icebreaker harnesses the performance qualities of natural fibers to offer an alternative to clothing based on petrochemical synthetics. Merino is an annually renewable fiber that naturally resists odors, keeps you cool when it’s hot and warm when it’s not, and lets your skin breathe for comfort all day, every day.