Wear as a top layer in the early fall, then throw a layer over it as the temperatures drop. The waffle knit makes for a great all-season piece. The Free fly Apparel Bamboo Breathe Series is an ultra breathable combination of viscose from bamboo fibers with a touch of quick dry material — keeps you dry and covered. • ULTRA BREATHABLE • QUICK DRY • LUXURIOUSLY SOFT Fabric:  70% Viscose from Bamboo / 30% Polyester Fit: Regular Care:  Turn inside out and wash on cold, delicate cycle. We recommend hang drying. Following these simple steps will extend the life of your garment.