The Davis Traditional Mask Pad Enhancer designed to be attached to your umpire or catcher's mask to reduce the risk of concussions and head trauma! It works by absorbing and redistributing the kinetic energy of an impact that could otherwise lead to a potential brain injury. Worn by Gerry Davis Tested to show a reduction of up to 70% in Head Injury Criteria (HIC) up to 85 MPH. The Head Injury Criterion (HIC) is a measurement of the likelihood of an injury arising from impact Lightweight design (4 oz.) makes the it virtually unnoticeable on your head Made of a proprietary high-density thermoplastic elastomer (TPE) with Aircell polymers. It is tough, lightweight and durable. Works with any traditional umpire mask, but not with hockey-style masks Achieves peak performance for one full season, or 50 games - whichever comes first No product can completely eliminate the risk of concussions or head trauma. There is no conclusive data that the Davis Traditional Mask Pad Enhancer prevents concussions. The design is intended to reduce the intensity of the impact force to the head and brain. For optimum performance, the Davis Traditional Mask Pad Enhancer should be replaced every season - or after 50 games - whichever comes first.