I have two pairs of tights, one for a seven year old and the other for a two year old. I got these for my eldest daughter in a size L which fits her perfectly (she is slim about 54lbs and tall. They are fleece lined and very warm, the fleece starts at the ankle, it doesn't cover the bottom of the foot. But for my 2 year old daughter i got them in size S, she is on the petite side (29 months to be exact), they were too long, i tried rolling them up at the waist but that still didn't help, the color was also a bit darker, which I didn't like that much. I took a picture comparing two pairs of tights.