These are the most comfortable pants I have ever owned! The material is very lightweight, soft, and stretchy. I also love that the rise is higher up on my waist. I am 5'1", 109 lbs, and I purchased an XS. The pants come to my ankles, the length is perfect for me. It is slightly lose on my waist and around my ankles. Two things I wish were different are I would have preferred a drawstring inside the pants rather than outside, and larger front pockets I could put my hands in. I hope Oiselle comes out with some more colors.
I wear small in distance shorts and medium in roga shorts. I purchased medium in these pants, and they were definitely big on me. Too big to even wear over something. Zippers on legs went right over my ankle bone and for the short 5 minutes I wore them inside irritated my skin on the bones. In order for me to return them, I have to pay shipping both ways. For me it is disappointing to pay $10 for shipping both ways for $79 pants. Back they go.
Loving these! Plenty of stretch to accommodate my sprinter thighs while doing squats and lunges. The longer rise means not having to hike them back up after every exercise and keeps your lower back covered - extra wonderful at those outdoor track meets in the cold. Also keeps from having multiple waistbands stacked on top of each other. Which prevents the chance of accidentally grabbing both waistbands and shucking off more than you intended. :) Lots of pockets for stuff. The nicest warm up pants I've ever owned, these will be getting a lot of use.