Since I cannot wear the women's sizes pants in KUHL, i was so happy when I could wear the boys pants. This is my third pair. I am 5'1, 25 waist, 108 pounds, and a large fits like a dream. They are super comfy and still large enough to wear long underwear underneath. They're also the perfect length to fit over my boots. I can't wait to use these in Iceland in a couple weeks. I have worn these pants in hot weather and cold weather, pouring down rain and snow. They wear VERY well. While not waterproof they are moisture wicking and dry extremely fast.