I ordered one pair of underwear to try before replacing all my underwear. Glad I did not order more. I ordered a Large based on their size guide and policy of no returns. The underwear I received was very uncomfortable and cut very badly in the inseam for someone with a Large size waist. While it fits in the waist, when I bend over the underwear only covers about half of my rear. This company had no interest in helping me with this issue. I cannot recommend this company and its products based on my experience. There are better Merino wool products and