<% rating = 5 %>It’s a scary sight, a conventional mattress (top) and a Serta mattress with FireBlocker (bottom), three minutes, 30 seconds after ignition (caused by friction, etc, etc). During tests conducted at the Underwriters Laboratories (UL), the Serta mattresses with FireBlocker smoldered at very low temperatures for 30-minutes, whereas conventional mattresses immediately became engulfed in flames… which is not good… even if you are the one spontaneously combusting. FireBlocker is a fire barrier system made of a blend of natural and synthetic fibers that helps isolate the impact a fire and block its spread. So, the next time you are looking for a new mattress (you know you need a new set!) check out Serta’s 2004 product line that includes FireBlocker.