The Fay Midweight Merino Top is a base layer built for cold-weather pursuits, blending merino wool and bamboo for natural warmth, breathability, and next-to-skin softness. The midweight construction sits in the sweet spot between lightweight and heavyweight base layers, making it suitable for a range of activities and temperatures. Designed to move with you from basecamp to backcountry, it functions as both an insulating layer under a shell and a standalone piece in milder conditions.