Description of Outdoor Research Zephyr Tank - Women's This smart and stylish tank with criss-cross back will keep you confident on any overhanging boulder problem. You’ll stay dry and comfortable in the FreshGuard® enhanced blend of polyester and cotton. Features: Lightweight Dri-Release® fabric manages moisture, dries quickly 78% polyester/14% cotton blend with 8% Spandex® Built-in FreshGuard® odor neutralization Built-in shelf bra (A/B cup)