It depends on what level/height you are schooling. I am an eventer and schooling tadpole and beginner novice some novice jumps. I use the Tipperary eventing vest.
Hope this helps
Champion ladies fit! It’s my go to backprotector when schooling youngsters!
I use the USG (I think) anyway it’s a German brand and it’s amazing because it’s so flexible
I have the Cadence vest by Horze. It’s very comfortable :)
I use an equi theme and ive found it to be the best one ive used to date
I don’t know where you’re from but I’m Ireland I love the RaceSafe :)