Children's trampoline on concrete

[Stars66]

Would you let your 2 yr old bounce on a small kiddies trampoline with handle on concrete or would it have to go on the grass.
Me and OH had argument about this last night.

Grass. Def not concrete.

Yes. I'd be there to supervise and ensure handle was being held at all times.

Grass but you can buy safety mats from Argos etc.

No