Purchased in the UK, size is 92cm, suitable for children aged 1.5 to 2 years old (blue check). Purchased in the UK, size is 98cm, suitable for children aged 2 to 3 years old (red check). Purchased in the UK, I think it's about 110cm in Japanese size (black check), for ages 3 to 4. This brand is very popular in the UK.