You know you need to be wearing FR. And you know your FR clothing has to meet—or better yet, exceed—your required level of protection. There are a number of ways to achieve that protection level, and a layered FR system is one great way to keep you protected and comfortable.

But FR layering can get tricky. It’s not as simple as adding up the arc rating of each layer. In fact, an extra layer of air between FR garments increases the arc rating more than simply combining the ratings of the two garments. That's why we recommend layering up your FR with a flame resistant jacket liner. Not only does a FR/AR liner add warmth, it also increases the ATPV, adding to your protection.

Bulwark FR offers a wide variety of flame resistant, arc rated liners for FR outerwear, including vest and sleeved garments in a number of weights to suit the weather. For an option you can wear as a jacket liner for really cold days or on it's own in milder conditions, check out the Men's Heavyweight FR Brown Duck Vest Jacket Liner. With pockets for added storage, and CAT 4 AR protection, this vest is sure to keep you comfortably compliantly, no matter the weather.

All Bulwark FR jacket liners are NFPA® 2112 certified and/or arc rated, so they meet industry requirements to keep you safe on the job. Bulwark's flame resistant apparel is tested to the highest standards and offers guaranteed FR protection for the life of the garment. These liners pair up perfectly with our line of FR Jackets.