The Puremerino Tee is built from 100% super fine 18.4-micron merino wool, sourced from mulesing-free Australian sheep and woven into the Puremerino 200 fabric. The regular fit makes it a versatile layer for hiking, travel, or everyday outdoor use, offering natural temperature regulation — warmth when wet, cooling when warm — alongside inherent odor resistance. No synthetic fibers are blended in, keeping the construction fully circular: the tee is both biodegradable and recyclable at end of life.