I ordered a size up as I expected it to be Asian sizing not US sizing. The belt fits well and they came down to about the knees. So if you are used to Walmart sizing I would recommend you probably go two sizes up and if you are used to H&M you should probably go one size up. Because size systems mean nothing. ๐คฆโโ๏ธIf you buy from PJ's, MAYBE +1 size depending on how loose you like your sleepwear. Works great at 65ยฐF at night with 60% - 80% humidity which is good for summer or tropics. ๐ด๐Tagged as 100% cotton and definitely feels real. Not as soft as some t-shirts, but not terrible. It stretches a little, but hardly.