Nike has just released a line of performance tights that feature X-ray images of bones printed on them. The idea behind them: show what you're made of and don't be shy to release your inner tough girl!

New Nike x-ray tights(Photo: Courtesy of Nike)

They are made from spandex and have Nike's Dri-FIT feature so they deal with sweat but have some style, too. Nike is hoping you wear them during a workout and out with your friends afterward. The tights, priced at $90, come in black and gray, green and purple or all nude.

Photo: Courtesy of Nike