The Rawlings Mach chest protector allows you to play well and look good doing so. Its leather design gives you a sleek and unmatched style behind the plate. In addition, Tri-Tech Technology™ padding allows air to circulate between the chest protector and your body. As a result, you stay cool even on the hottest days. For added comfort the Mach chest protector features our new Dynamic Fit System™ 2.0, which provides a four point flexible shoulder and back harness. This allows for a 'custom', form fit that keeps the chest protector from sliding around while you move during play. The patent pending Arc Reactor Core™ technology blends impact absorbing memory foam and an arched, engineered polymer plate together. This revolutionary technology disperses forceful impacts and dampens ball rebounds for increased protection and performance. This chest protector meets the NOCSAE® commotio cordis standard, giving you added confidence every inning. When you put it on you'll feel the difference.