Underworks Extreme Compression Swim Bodysuit MicrofiberSpandex Measure Chest - Small 32-35 / Medium 36-39 / Large 40-43 / X-large 44-47 / 2x 48-51 / 3x 52-55 / 4x 56-59 Extreme compression in the chest, mid-section, back, and thighs Smooth microfiber feel, fastened with a zipper for easy on and off Compression material is undetectable, provides straight body lines Quality construction, Made in USA The UV-resistant microfiber fabric provides SPF 50 protection and gives this garment the appearance of a normal, zip-down-the-front swimsuit. Inner compression panels are hidden from the public but provide the firm shaping youre looking for across your chest and upper torso. Designed to move with your skin for more comfortable wear and to eliminate bunching, shifting, or ride-up. Concealer Compression inner compression layer:  indistinguishable from a normal swimsuit SPF 50 rating for UV protection Made in USA. <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. <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.