Women's 185 Rock'N'Wool Long Sleeve 26/27

The 185 in the name is the fabric weight: 185 g/m² of 100% merino wool, spun with Südwolle's OTW technology so fewer fine hairs stick out, which cuts pilling and adds elasticity. The wool is 19 micron and comes from Ortovox's Tasmanian farms. It regulates temperature and moisture and neutralizes odor. The Long Sleeve is the crew-neck version, with a split asymmetrical design and multi-colored twisted yarn.

A crew has no zip, so you cannot vent at the neck the way you can with the Zip Neck. What you get instead is the simplest possible layer: nothing to catch under a pack strap or a harness, and a looser cut that wears comfortably on its own.

It suits skiers who want a merino base that doubles as a standalone top around town and at the trailhead. If you run hot on the way up and want to dump heat fast, take the Zip Neck.

Merino this fine sits comfortably against skin with no itch. The looser cut means it layers easily under a midlayer without binding at the shoulders.

This is the piece that ends up living in the rotation all winter, mountain and valley alike.