Gore Running Wear Women's Essential Lady Singlet, Waterfall/Ice Blue, X-Large 100% POLYESTER, MESH: 100% POLYESTER Imported Sleeveless for hot weather conditions: more a tank top than a singlet due to the wide shoulder straps made of an airy mesh fabric. As a result, this is versatile and fashionable. Slim fit Mesh inserts for ventilation under arms and at nape Reflective logo on front Reflective piping on back