I LOVE these! It’s finally spring & I’m obsessed! All of the Rest Day Material is SO comfortable! Just the right weight, not too warm or heavy while still feeling very cozy! I am 5’3” & 130lb, I'm a lululemon 4 in leggings, an alo leggings xs & a sm in spiritual gangster & Vouri sweatpants/joggers. Only the xs was available, & I was nervous about the waist being too tight. I have a very sensitive stomach & won’t wear tight waistbands. The SM would be perfect but honestly, I love them so much I don’t really care. It is a little snug, but not uncomfortable (unlike lululemon’s ready to sweats or Ready to Rulu Jogger in a 4). I can even wear them when I’m bloated : ) Definitely Recommend!!