This is a Lululemon Skirt (only the shirt, there are no liners, no shorts underneath) that looks like the Pace Rival Skirt (skort). It is supposed to be worn with any type of (separate) running shorts. It has a tiered backside and a wide, non-slip, neon colored band so that the skirt does not ride up over the shorts. Never worn. The tag is yellowed in storage. Size 6.