Y LightLine Merino Tee is a lightweight, comfortable and highly functional tee-shirt, specially developed to perform during rapid summer hikes and high-output activity. The high performing material mix contain 85% merino wool and 15% polyamide. The wool is certified through Responsible Wool Standard and provides a cooling feel against the skin on warm days and warming in colder weather. Merino wool provides warmth even if it gets wet and has excellent wicking abilities. It is also highly moist absorbent; merino wool is capable of absorbing moisture equivalent to 30% of its own weight before it starts feeling damp. Y LightLine Merino Tee is sewn with flatlock seams for added comfort.