Good protective vest for a decent price?

What is a good protective riding vest that is priced decently (aka less than $150 preferably)? My mare is kinda hot and spooky and we just moved to a new barn (had to move out of state from our barn). My trainer at the last barn recommended doing a lot of trails with her with another horse and rider with us to get her confidence up and learn how to relax. Just for my own safety I always wear a helmet with her and I want a vest too, just in case cause she can pull some stupid sh*t when she gets scared.