Women's Core Compression Short Sleeve V-Neck Shirt 86% Copper Polyester, 14% Spandex Imported Comfortable enough to be worn all day under your work clothes Wickable fabric keeps skin dry Helps support muscles and joints in the neck, shoulders, torso and back Gentle, effective compression allows for 24 hour use, even while asleep Anti-odor technology inhibits the growth of odor causing bacteria on the fabric