I received this as a gift for my 50th birthday along with the crew top. I wear it routinely both casually and athletically, as an under layer. I prefer wool due to its insulating properties when wet. I love it! It is thin enough to fit under the other cycling specific layers I use for cold weather commuting. I wear it as casual apparel too. It washes easily in a gentle cycle or by hand using a mild detergent, dries quickly, and holds its shape.