Orbea kids Grow 1 bike – first pedal bike for kids, frame can be set at one of two sizes so it can grow with the rider (photos show larger size) – review here https://www.bikeradar.com/news/orbea-grow-kids-bike-range-first-look – one of twins had this and the other had the equivalent frog and this was the more robust of the two and the adjustable sizing meant that it fit better and for longer. Collection in Cupar though may be able to meet up nearby/St Andrews