Size medium Chest across unstretched 16 inches. Omni-Freeze™ fabric: Omni-Freeze™ is a heat transfer fabric that disperses body heat to help keep you cooler in hot weather. • Omni-Shade™ UPF 50 fabrication protects your skin during outdoor activity by blocking harmful Ultraviolet A and Ultraviolet B rays (UVA and UVB). Tank dress features a seamed empire waist and A-line silhouette. Sleeveless. Straight hem. Slip-on and unlined. 92% polyester, 8% elastane. Machine wash and tumble dry.