Topo Designs Tech Knit Tee Size: Medium Color: Gray Heather Worn Once Topo's super comfortable, ultra soft Tech Knit Tees feature a double-face knit construction and wear like a cotton basic. A cotton-poly exterior and mesh knit interior help this shirt dry quickly after high-intensity activities or unexpected weather. Use the PackFast™ Packing Band to easily stow away during packing and travel. - Straight fit - 30+ UPF rating