Love these! Sturdy comfy material, they’re definitely warm. I ended up buying a medium in them, I usually get a small with these types of pants but occasionally a medium since I’m in between the two. My waist is around 28” and I could have gotten away with a small in the waist department for sure with the tie waist but it’s fine with the M. I chose the M since I have larger thighs and hips and am glad I did cause this fits comfortably. So unless you have big hips and thighs you should be fine with the smaller of size options that would fit you.