When the temperature drops and layering matters, this is the base layer we reach for first. 100% Merino wool in a ribbed interlock knit regulates body temperature and moves moisture as vapor — not liquid — so you stay comfortable through hard efforts in the cold. Raglan sleeves and a curved hem keep it comfortable under a pack or shell all day.

• 100% Merino wool construction is naturally odor-resistant, temperature-regulating, and softer against skin than traditional wool
• Ribbed interlock knit moves sweat away as vapor — not liquid — so you stay dry without that clammy, soaked feeling
• Raglan sleeve design eliminates shoulder seams, which matters when you're wearing a pack for hours on end
• Regular fit with a curved front and back hem layers cleanly under a mid layer or shell without bunching or riding up
• Available in Toasted Coconut/Heather — a warm neutral that works as well around camp as it does on the trail