Energy Block Transfer System The unique Energy Block Transfer System does exactly what it sounds like: when a player is hit, the vented Energy Blocks take the force of the impact and disperse it over a much wider area. Much less force from the hit is actually felt by the player. Vapor Release System To maximize air flow and circulate more air around your body, the arch features 5mm vapor ventilation holes throughout. More air movement means youll be cooler and drier. Brock Air Circulation The patented Brock Beaded Quilt not only evaporates sweat faster, if focuses air circulation pushing the cool air in closer to your body while the hot air is pushed out. Each model also features 5mm vent holes that keep the air flowing around you body. AEGIS Anti-Microbial Exclusive to Schutt, AEGIS® takes anti-microbial agents to the next level.