Originally Posted by HorsesAreMyPassion
Does your saddle slip/move when you are riding? If your saddle fits your horse properly and is staying in position while you're riding, then you shouldn't need one. If you notice that it is slipping/moving, first of all check to make sure the saddle fits your horse properly. Once you have made sure that the saddle is a good fit but it still slips/moves, then a breastplate would be a good idea.
Nope, it doesn't slip at all.
Recently, we've noticed my horse "puffing" his stomach out when I first put the girth on and even after I tighten it 2 holes before getting on, I'll be riding, jumping, etc. and then take a break and notice I can fit my whole hand through my girth, yet my saddle didn't move an inch!
Regardless, I definitely tighten the girth more and check it after I get on to make sure it's still secure now.