To keep the horse less distracted/spooky in a course, and some people use them for style
It helps with noise, bugs, and is super cute!!
Hi Alexis! I use one any time the flies are likely to be an issue - schooling, trail riding, competition (when legal), etc.
I use mine to keep bugs out when I ride out in the field.
You can get soundproof ones, but they're quite expensive and only legal at certain shows/levels/disciplines.
The regular bonnets rarely muffle sound unless your putting an ear plug in and putting the bonnet over.
Also for bugs and such in the summer/fall
Helps keep noises softer/quieter and plus it’s cute😜