Hey, I'm looking for an armoured textile jacket for my niece. She really enjoys going for bike rides with her Grandpa, but I would feel a whole bunch better if she had some protection. Doesn't have to be anything fancy, or any particular brand. Just something to give her some more protection. Size? Don't have a clue. She is 12. Maybe a youth large, or adult XS? Looking to get this for Christmas, so please let me know if you've got something kicking around, maybe your kids have outgrown.Thanks.