Dinosaurs roam around the brim of the hat under spewing volcanoes. My hats are made with soft, warm and itch free acrylic yarn. Each hat is knit by me, using only my own original designs. I size according to age, and guarantee the fit. If the hat does not fit, simply mail back the new hat with tag still attached, and tell me what you need different. The hats may be washed by hand, or in a garment bag in the washer with cold water. Lay flat to dry. Sizes: Newborn: 0 to 6 months. For babies born August to March 6 to 12 months. For babies born April to August 1 to 3 years. For babies who will turn one during the winter until they are 3. 3 to 7 years (petite girls will stay in this size until about 10 years old. Equals a small adult) Adult Children's heads are bigger than most people anticipate and I size accordingly. The first comment from most customers is that their child has a big head, and they are right. If a child is going to turn the next size during the winter, go up to the next size. For example a child who is 9 months in September will want the 1 to 3 year old. Feel free to message me with any questions.