eYourlife2012 Men's Slimming Trimmer Body Shaper Vest Lose Weight Underwears Vest Tank T-shirt Material: 80% Nylon + 20% Spandex You can wear it anywhere, anytime and if you are comfortable even during sleep Helps to protect the spine from backaches and muscular fatigue Stretchy Firm Tummy Belly Control Slimming Body Shaper Vest Undershirt Magic Compression Muscle Shirt Comes with