Storelli ExoShield Head Guard Military grade: embeds up to 9mm of viscoelastic protective foams used in combat-grade military helmets, custom-formulated to fit the needs of soccer players. Head the ball without problems and protect your head from cuts and bumps due to head collisions Lightweight: weighing only 8 ounces, this head guard fits comfortably, conforming to the shape of the player's head for maximum comfort and fit Stealth: sleek design avoids traditional 'helmet' look while still maximizing head protection in key areas