Back on topic: OP, try looking at Uniqlo for sweats -- their sizes run small, so make sure to look at the measurements. Once things open up again, you might be able to try on some of their sweatpants and things at a nearby store. The Uniqlo pile lined sweatpants and leggings are great for those of us who run cold! Also, Lands End kid sizes (XL, XXL, and plus XXL, for example) work very well. They have pile lined leggings, too. This isn't really the best time of year to find these things -- start checking once the fall/winter things hit the stores -- but you might find some great bargains in the clearance sections online!