ROSPA say children under 6 shouldn’t use them but what do they know ….?
We bought our son one for his first birthday (with a net). He toddled straight over to it, shimmied up the ladder and managed to pull the zip open, and started running and ‘bouncing’ (not getting any air at that age). He’d been on the daycare one since about ten months, usually as the youngest of two or three kids aged up to three. By the time he was three (still the youngest at the daycare) he was practising rugby tackles with seven-year olds on it!*
As above, the only injuries I know of from the daycare, friends with tramps and our own, are when there’s more than one kid on, and one accidentally gets a smack in the chops or a clash of heads, tongues/lips bitten etc.
Ours is one of the best investments we’ve made, our eldest has spent hundreds of hours on it, gets tons of exercise from it. Got to weigh up overall health benefits against the possible (and probably tiny) risk of occasional injury.
*in true STW fashion, I therefore know better than ROSPA, based on my one bit of anecdotal evidence 😉