A great choice for trundle or bunk beds, the Sealy Z-101 offers premium materials and quality support at a great value. This firm foam mattress features an Anti-Microbial soft knit cover, treated to defend against dust mite dander and other allergens to promote a fresh, healthy sleep environment. Beneath the cover, the SealyCool gel infused foam core offers body conforming cushioning and support while helping to maintain a cool, refreshing feel. 10 Year Non-prorated Warranty.