Superior Flex Foam Bunk and Trundle Friendly Rolled MattressThe Rest Relax Superior Flex Foam Mattress offers a generous layer of supportive reflex foam, providing comfort and support for those that prefer to sleep on a firmer surface. Ideal for bunk beds and trundle beds. The Reflex Foam layer helps keep the correct alignment of the spine and the neck, with weight evenly distributed across the mattress. Our Superior Foam Mattress is finished in a high quality breathable quilted fabric outer, to help airflow