ALIGNMED Posture Shirt Pullover for Men &ndash; Moisture Wicking, Breathable, Compression & Performance Active Wear 83% polyester, 17% spandex CORRECT BAD POSTURE - Perfect for correcting, maintaining, and preserving proper posture for increased mobility, range of motion, pain reduction, and enhanced performance PURPOSE BUILT - The Original Posture Shirt is anatomically constructed with tension panels called NeuroBands that activate and stimulate specific muscle groups and joints to keep the body upright FEATURES - All our mens posture shirts feature vented POWERMESH panels, moisture wicking fabric, NEUROBAND technology and anti-microbial protection BENEFITS - Pain management for shoulders and spine, improved alignment, improved core activation, improved shoulder mechanics, improved blood flow to upper extremities, increased upper body strength, increased oxygen intake, accelerated healing and decreased wear and tear on joints CARE - These shirts are constructed from 83% Polyester and 17% Spandex. Machine wash cold with like colors and air dry, do not iron