This listing is for one blue L-size baby & kids acorn hat. I knitted a warm acorn hat with soft wool-blend tweed nep yarn. The loose knit creates a cozy and soft texture. As it's a knit, it has some stretch, accommodating head circumferences approximately 5cm larger or smaller. Enjoy styling it by folding the brim or adding darts with a brooch. ⭐︎Size L size Flat measurement: Length approx. 23cm, Height 19cm, Brim approx. 46-50cm (approx. 3 months to 1 year old) Tweed Nep 80% Wool 15% Acrylic 5% Polyester Blue: A beautiful greenish-blue color ☆The hat sizes are made with reference to the following average sizes, but head circumference varies greatly depending on the individual, regardless of age, so please measure the wearer's head size. Reference Sizes 3 months: 42cm 6 months: 44cm 1 year old: 46cm 1.5 years old: 48cm 2 years old: 50cm 3 years old: 52cm Elementary school (lower grades): 52-54cm Elementary school (upper grades): 54-56cm Adult women: 54-56cm Adult men: 56-58cm