Designed with PostureCue Technology and perfectly positioned posture panels, IntelliSkin?s Foundation Tank comfortably conforms to your upper body to provide gentle posture management. The moment you put on the Foundation Tank your spine and shoulders immediately align and your posture is improved. This sleeveless shirt provides an optimal range of motion for various athletic activities, including basketball, volleyball, tennis, weight lifting and more. Made from specially blended, moisture-wicking material, the Foundation Tank keeps you cool and dry, while minimizing odor. Start with your current t-shirt size when making your IntelliSkin selection. If you have particularly broad shoulders, you may need to size up.