At Prois, performance fabric choices are EVERYTHING. We believe the cornerstone to the best outdoor gear lies in its fabrics. Merino wool is far superior to the synthetic fabrics available on the market and we have sourced the highest quality merino available. Merino wool is naturally anti-microbial, odor-resistant, moisture-wicking, offers UV protection, static resistance, and the fibers are much finer than traditional wool. Because of this merino wool is not itchy like the wool produced by other breeds of sheep. This gives our Olann line an ultra-soft touch with none of the itchy feel of regular wool. Our Olann line is constructed of 96% Merino Wool and 4% Lycra. Our Olann Merino Tank features an athletic fit, Lycra Racerback, and extra length through the torso for tucking in and a modern fit. We added a touch of Lycra to give this line additional stretch for the perfect fit allowing the garment the move with you without hindering full range of motion. This also allows the this garment to conform to a wide variety of body types.