These are Adidas women's training/running pants. I don't know the exact name. I usually wear a size M, so I listed them as M, but please refer to the actual measurements. The waist has both elastic and a drawstring, and the fabric is stretchy. They're a bit too tight for me, so I've only worn them a few times. However, they are not in like-new condition, so they are not suitable for those seeking something brand new. Please understand this before you purchase.