Freedom Series Caps come equipped with MSA's Fas-Trac® Suspension and meet all applicable requirements for a Type I (top impact) helmet as outlined in ANSI/ISEA Z89.1-2009 (Class E) and CSA Z94.1-2005 (Class E). MSA caps also meet the voluntary standard for reverse donning and low temperature [LT] as prescribed by ANSI/ISEA Z89.1-2009.