Nike Power Pocket Lux - Mid Rise Tight Fit. Brand New With Tags - X-Small. Sorry the Smalls are all Gone. The wide, flat waistband offers a flattering fit, and you can find extra storage in the width of the waistband's diameter in both the front and back. A diamond gusset allows the piece to move with your body as you run. Fabric Body: 74% polyester, 26% spandex