Devold Explorer vest is designed for comfort and maximum warmth yet built to be as lightweight as possible. This is a merino fleece that is ideal at high altitudes, where temperatures can change in an instant. The super-soft, brushed inner layer made from 100% merino wool forms air pockets against the body, providing exceptional insulation. In the outer layer, we use Expedition wool to transport moisture away from the body as efficiently as possible. The Explorer series is designed for longer hikes, with good mobility being a key aspect in the product's construction. This unique merino wool blend makes both hiking and base camp more comfortable.