Neck circumference is approximately 35 cm. Suitable for ages 1 to 5 years old! 100% cotton. This is a handmade item, so it is not perfect. Thank you for your understanding. *The color may vary slightly depending on the photo. For handmade items, we offer a 50 yen discount for bulk purchases. 2 items → 50 yen off 3 items → 100 yen off 4 items → 150 yen off Thank you for looking.