A year ago I bought a little bouncer for DS1 - one of those ones with a bar to hold on to. It looked small, but was rated safe up to 18kg and 3 years. DS1 is 3, weighs 12 kg and is small for his age. He is still in either 18-24month or 2-3 clothes. He is not one of those really physical 'turbo boys' if you know what I mean.
He had a go on the trampoline and bounced so high that it tipped and would have gone straight over if I hadn't been there.
I am annoyed that it is clearly dangerous even though he is well within the supposedly safe range for the tramploine. It makes me wonder how carefully they test this equipment. Boo.