My husband bought these for me. I removed the tags and I just don’t wear them so they’ve been sitting in a drawer. There’s a photo that shows the waistband but obviously this is an elastic waist so that’s the smallest size. I am guessing these are a small that’s my go-to size. No chance they are a medium. An ultralight jogger made to perform, stretch, and move with you. Crafted with a mostly recycled performance knit that's so breathable and weightless, nothing will slow you down. Great for travel or your next adventure. 4-Way Stretch 4-Way Stretch Quick Drying Quick Drying Moisture Wicking Moisture Wicking Recycled Material