1 Pc Straw Hat [Dimensions] The hats measure: 3 inches brim to brim and has a 1.25 inch opening. 4 inches brim to brim and has a 2 inch opening. 5 inches brim to brim and has a 2.5 inch opening. 6 inches brim to brim and has a 3 inch opening. 7 inches brim to brim and has a 3.5 inch opening. 8 inches brim to brim and has a 4 inch opening. 9 inches brim to brim and has a 4.5 inch opening. 10 inches brim to brim and has a 5 inch opening. 12 inches brim to brim and has a 6 inch opening, approx 2.75"H [High Quality] Our hats are great for any kind of crafting from decoration to actual costume wear. It is both lightweight and odorless. This product is sure to inspire your arts and crafts projects.