The BloqUV New Polo dress has a UPF 50 plus rating, blocking out 98 percent of the sun's harmful rays. The polo dress is great for the beach, pool, boating, or any of your outdoor activities. Dress length front size medium: 33.5" BloqUV clothing undergoes the most stringent UV Testing:All BloqUV fabrics are tested in accordance with the American Association of Textile Chemist and Colorist (AATCC).Fabrics undergo 40 home launderings and 100 hours of simulated light. BloqUV provides a minimum UPF 50 = blocking 98% of sun's rays.BloqUV customers have piece of mind that all BloqUV clothing provides. UV protection and blocks 98% of sun's rays (UVA and UVB).BloqUV - sun protective clothing that is fashionable and functional.