I ordered size Large. Iʻm 5ʻ5" and 137 pounds, my waist is 33 inches. These pants are GORGEOUS, beautifully well made, soft, not itchy and a great design; perfect in fact, except that they are very tight through the waist. The un-stretched waist laying flat is 28 inches, when I put them on they are quite snug (just this side of uncomfortable), once they are washed they inevitably will shrink (the tag states they are machine washable, but not machine dryable). The length was good on me (Iʻm normal height at 5ʻ5", neither short nor tall).The manufacturer makes this pants in sizes XL and XXL, but Amazon does not sell anything bigger than a Large. Itʻs a shame, they are fantastic pants, but only if your waist is about 30 inches or less for the size Large.You should also know that despite what the Amazon ad says, THESE ARE NOT 100% MERINO WOOL. They are 78% wool, 19% polyamide and 3% elastane. The tag states that they are make to the Oko-Tex 100 standard (which means they are free of gnarly chemicals).