These leggings are amazing! They are very warm, soft, well-constructed and seem like they'll last a long time. I'm 5'6" and weigh about 135 pounds. I bought the large, which fits me perfectly. The wide waistband is comfy and it DOESN'T GAP on me, which is nearly miraculous. I wish they were about an inch longer, but that's a minor complaint. When I wear these leggings under my LL Bean sherpa lounge pants I can walk for several miles outside in wind chills as low as 5 below & not feel the cold (I...