Ralph Lauren Kids Knit Hat Authentic item, so please buy with confidence ✧*。 Purchased and used once for a short photoshoot, then stored at home. Navy, an easy-to-match color (⁎ᴗ͈ˬᴗ͈⁎)✧*。 There is no size notation, it's one size fits all!! Because it's knit, I think it's a size that can be used for a long time, from kindergarten to elementary school (*^^*) Flat measurement is about 23.5cm Please use as a reference as it is a rough measurement ✧*。 For those who understand that this is a used item and has been stored at home, thank you ✧*。 Please refrain from purchasing if you are concerned about minor details m(_ _)m