Bedding Warranty? - Event Date: 03 May 2019 - 24 May 2019

In all probability the warranty applicable to the mattress is the one from the mattress manufacturer.  Take a look in your materials for equipment from other manufacturers that should have come with the trailer, such as the stove, water heater, etc.  If the mattress info is not there, call FR and they should be able to put you in touch with the manufacturer to get the warranty info.

But, don't get your hopes up.  Lower end lightweight trailers notoriously have lousy mattresses that won't sustain someone your weight, or anyone over 90 pounds for that matter.  In the forum there are lots of discussion threads on alternative mattresses.  Look for mattresses in the search function in the upper right of the page.  It's best to go into advanced search and expand the time frame to the last year.  Once you find the threads, you'll find lots of information about replacement mattresses.