This item only can be hand wash and hang dry. Our aim is to provide satisfied experience for all customers, if any problem about this chest vest, we hope you can contact us. Material: 80% Polyester + 20% Nylon. Men shirt underwear was constructed by stretchy and lightweight fabric, which can provide comfy texture and make it great for body shaping, suck every excess fat in to improve your appearance of tummy and chest. Tight undershirt for men to reshape body in better condiction, this including help tighten loose skin after you lose weight and squeeze man moobs in to hide gynecomastia, slimming shapewear make you lose inches by redeucing unwanted love handle. Men compression shirt with double layered design,the inner layer work as tuck belt flatten your belly bulges ,outter layer compresses on the lumps and bumps to create smooth silhouette, make you look slender instantly when you put it on . Tank top body shaper with 3 hooks allows you to control the compression you need on abs, guarantee light support to relieve pain on lower back, wide straps will take the pressure off of your shoulders and instantly correct your posture. Invisible flat seams make these body trainer shirt unnoticeable under clothes, move as your second skin without any restriction, breathable material wicks away sweat to keep you cool, which can give you a long-last comfortalbe feeling for all day.