Quadra™ Plain Weave Poly, 100% Polyester, 112 g/m2 with WR FinishQuadra™ is a quick-drying 100% polyester with an excellent UPF rating of 50+. The 50d polyester has a mild wrinkle finish for a soft hand that wears comfortably and provides a relaxed look. Extremely lightweight, Quadra™ offers phenomenal protection from the sun, keeps you cool when active, has a WR finish to resist water, and dries very quickly.