I have held off posting, but I wanted to share my experience with the Champion Adult Titanium TI22 Protector. I am short-waisted, vertically challenged, and middle-age. Not an easy fit for a BP. I also tend to overheat very quickly and found competing mid-summer in my vest pretty awful.
I have tried just about every vest and owned several, including Charles Owen and Tipperary. I hated them all. I tried on the Airowear and thought that I would never be able to ride in it. I wanted something that was Beta 3, but I felt all of the ones that I tried (at Dover and Smartpak) would never work. I over-heated in my CO. The Tipp was not a great fit and was not certified to boot. When I retired y horse from eventing in 2008, I sold them all.
I got a young horse, and, although, I know the BP will not protect my spine, protection against bruising is a plus. So I began my search anew to see if any of the newer models might be an improvement over the older designs. I ordered just about all of the ones I could try from Smartpak and none were comfortable.
Then I saw an ad for the Champion. It has a short size, so that was a real attraction. The price was pretty high, but I found it on Ebay really cheaply and bit the bullet. My measurements were between a small and a medium, and I ordered the medium. It seemed good , but a bit big. So I ordered the small short, and I am in love. It has a reflective lining to help dissipate the heat, and I think that it helps. It has sections like the Tipp, so it is flexible, but it is Beta 3 certified. I have been riding in it several times a week for the last two months, and it is the best vest that I have had.
So any of you vertically challenged folks who have trouble finding a vest, you may want to try the Champion. I suspect that taller folks will like the regular and tall sizes, but finding something when you are short-waisted is a real plus.