Y LightLine Merino Top is a lightweight, comfortable and highly functional singlet, specially developed to perform during rapid summer hikes and high-output activity. The wide shoulder straps increase your comfort when you carry a backpack, and the back face of the singlet is specially adapted to the use of sports bras. 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 Top is sewn with flatlock seams for added comfort.