Rawlings, for example, manufactures batting helmets for the majors and has an extension — called Mach Ext, to go with its Mach helmet — to match. That is what Lindor, Alonso, Smith and Cano wear.

A helmet wouldn’t really protect your brain if you stand less than a foot away from 3 grams of TNT when it explodes, but a simple face shield attachment would help defray the blast energy from ...

Helmet face shield could reduce troop brain injuries By Melissa Healy, Los Angeles Times Nov. 22, 2010 12 AM PT ...