All Star System 7 Ultra Cool Chest Protector - Men'sChose all-star protection in the All-Star System 7 Ultra Cool Chest Protector for baseball players. Smart design details launch this bullet into the stratosphere, like the reduced weight, larger Ultra Cool vent holes and wedged abdominal pads that dampen and deflect balls downward. High levels of protection and adjustability come with the sternum, throat and moldable collarbone PE plates, adjustable shoulder cap and DeltaFlex harness. Wraparound sides help protect your core for those hits you can't predict. Additional details include low-rebound memory foam and Aegis Microbe ShieldŽ antimicrobial and odor protection. This adult-sized chest protector measures 16.5". To determine the proper size, measure vertically from the top of the sternum, down to the waistline.