Sealy Perfect Rest Crib Mattress. • 150 heavy gauge interlocking steel coils are heat-tempered for strength and durability • All-around border rods keep the sides, corners and edges firm--just like an adult mattress • A soft, non-allergenic sleeping surface gives your baby comfort and support • Reinforced vinyl laminate cover resists stains and moisture. Mattress wipes clean with a damp cloth • This mattress also fits toddler bed frames • 10 year warranty on workmanship and materials • Meets Federal Flammability Standard 16 CFR 1632 & California Bureau of Home Furnishings Technical Bulletin 603