Sphero™ HO Stretch Poplin, 89% Polyester 11% Spandex, 75 denier, 152 g/m2 with WR finishSphero™ HO is a plainweave poplin with a unique polyester and high spandex for the best in four-way stretch comfort. Made from extremely durable fibers, this sturdy fabric maintains its shape through the push and pull of strenuous activity, while it's hydrophobic fibers allows it to dry quickly.