For warmth, performance, longevity, and extraordinary comfort, Merino wool rules, and the Skar top delivers heavenly soft Merino wool in a washable pullover crew shirt that's built to last. Luxurious jersey fabric with 3-D articulated design and plenty of stretch gives you a great fit and perfect design for sports or outdoor adventures, while its odor resistance and near-weightlessness make it ideal for travel. The stretchy fabric pulls on easily as a solo shirt or over an extra layer, and the sleeves are finished with stealth thumb-loops for Kuhl's signature warmth and fit. 100% Merino jersey wool.