Nike Sportswear Bike Short

58% cotton, 32% polyester & 10% spandex - I would describe these as a high quality, thick and sturdy pair of bike shorts. They are not super stretchy, but therefore have held up really well. I bought them too tight and have worn them very few times. They are a medium so depending on how tight you like bike shorts, I would recommend for a size 6 or 4 US. Also because they are cotton, I would describe them as a light black vs a dark black, they look more faded then pure black.