Kids bike gear

[Littlepeahead]

Looking for some gear to fit my nephew. He's 11 but tin ribs skinny and not tall so something age 9 to 10 may well do. I'm after a jacket and trousers, plus gloves so I can give him a go pillion. I'm based Chelmsford and work NW London but can pay postage.

If you've got anything your kids have grown out of that might be suitable please let me know.

Thanks.