Yep the smallest Puky had our lad of average height for his age on two wheels at 18 months in a surprisingly competent manner within days. The Puky bikes are well built and seem to handle well whilst being light enough for them to manhandle. It’s coped with his passion for dropping off kerbs without complaint. Bit limiting off road because of the small diameter solid tyre/wheels, but it copes with woodland footpaths and the like.
He just turned three and we bought a 12″ wheeled Hotrock on Monday because he was asking for a bike with pedals. The coaster brake seems to be intuitive enough and he did a nightride monday. Cue one extremely proud set of parents. 😀
The larger Puky balance bikes were a bit big until 2+ as his friend has one complete with the rear brake. That would still be fine for our lad now, but the little Puky is just a bit too short.
Specialized also do a diddy balance bike which looks similar in size to the Puky.