Is there a gadget to cover the seatbelt buckle??

[Mycathasnoears]

My son keeps undoing the seat belt as he has learnt to press the button. Does anyone know of any gadgets to prevent this? I am talking about a normal seatbelt as he is now in the booster seat-type of chair.

It does exist but I cannot for the life of me remember where I've seen it, I'm thinkinging kiddicare or halford, it was like a rubbery pod that slid down the belt and covered the clip, a friend had them to prevent an older dc accidently unclipping the little ones carseat.

Is this it?

That'll do the job - thank you!

no prob