This is a summer hat. I bought it because I thought the light blue, purple, and orange colors were cute, but I never used it and just stored it away. I'm not sure what the material is, but it's knitted. The brim is made of purple knit material with wire in it. There are pom-poms attached, but they are squashed, so you could remove them and use the hat as is, or attach your favorite badges instead. There's no size indicated, but it should fit most people... (^-^; I think it would be cute for elementary school children in the upper grades or junior high school students to wear. There's a possibility of changing the shipping method from Yu-Yu to Raku-Raku.