These are kids' pants, but a petite female friend bought them for herself and then passed them on to my child. My son wore them frequently when he was around a size 150, so I think that's the size. The waist has adjustable elastic. The material doesn't stretch. The knees are a little worn, but there are no signs of holes. My friend used to roll them up, but it seemed like rolling them up would get in the way for my elementary school-aged son, so I cut them a little longer and hemmed them with a sewing machine.