Arena powerskin carbon flex open back tech suit. Size 28, arena kneeskin sizing is more similar to practice suit sizing compared to speedo. Cheap price due to hole on the strap in the back, hole is only in fabric and does not extend to seams, all seams are intact. Has been worn once with the hole and it didn't rip any further or cause problems. Otherwise fabric in great condition & only worn twice total, would be good for a swimmers first kneeskin or someone looking for a cheap one that doesn't mind the hole! comes with bag!