Underworks Posture Control and Training Shirt Top 100% Spandex Sizes - Measure Chest in Inches: X-small 28-31 / Small 32-35 / Medium 36-39 / Large 40-43 / X-large 44-47 / 2X 48-51 / 3X 52-55 Powerful yet comfortable Made in the USA Tummy Flattening Benefits White Bad posture can really be a pain in your back but, with a <span class="a-text-bold"><u>posture corrector brace</u></span>, your upper body has the additional support it needs for better alignment. Our Mens Posture Corrector Shirt is designed to offer support to the muscle groups that are instrumental to better back health. In many cases, rather than using our muscles to support themselves, people rely on the spine, which was not intended to support your head and upper body over long periods without muscular support. This mens posture corrector shirt mimics those tight, compressed support muscles, resulting in a healthier posture for less pain. Engineered to support the upper torso muscles your body uses to maintain good posture Resistance bands cross your shoulders and down your sides, while midriff compression mimics an engaged abdominal area to counteract the upper bands. Specially contoured back helps avoid lower back slouching and stooping Outer shell is a nylon-spandex tank for discrete use under clothing Designed and manufactured in the USA of US-made materials. <span class="a-text-bold">MEASURE YOUR CHEST:</span> With arms down on side, take a snug measurement around the fullest part of your chest over the nipples. <span class="a-text-bold">HOW TO WEAR:</span>  Hold both straps of the shirt and step into the garment. Pull up the garment and slide arms through armhole and adjust for comfort. Make certain that loose panel inside is again the back. <span class="a-text-bold">HOW TO CARE:</span> Wash in cold water, gentle cycle, tumble dry low or flat dry. No bleach, no iron.