We were able to get a good look at the back of Posey’s chest protector to find that his model is the UACP-AP, a chest protector that is available at the link. Posey has trusted in this chest protector for his entire career, however, there is a little more to it than just the standard UA model. In the photo you can see some green material, called Unequal Tech, which is a composite material with Kevlar and other materials that is designed to lessen impact. It is being used by several Big Leaguers, and you can read more about that here.
Buster Posey’s Under Armour UACP-AP Chest Protector w/ Unequal Tech Protective Padding
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