RockWearZ Bodywear Men's Body Shaper Tank Top Slimming Compression Under Shirt 80% nylon Material: 80% Nylon + 20% Spandex Can be worn when exercising or relaxing Comfortable to wear all day and everyday Invisible under clothing - Body shaper is invisible under your cloths, so no one knows you're wearing it Instantly look firm and trim again. These Shapewear Tanks are designed with extremely breathable and comfortable silk like fabric.