We received two of these robes in X-Large (size 9) for Christmas. My daughters LOVE them! They wash well and are nicely made. Though the listing does not provide number sizes, I will tell you that an XL is clearly labeled as a "size 9" on the inside tag. The robe is appropriately oversized for my four-year-old (who is tall for her age); but unfortunately, the arm length "just" fits my six-year-old (who is also tall for her age) not enabling us to roll the cuffs.