Dream On Me,150V Visco Pedic Innerspring Standard Mattress is our top of the line Crib and Toddler bed mattress, proven to provide a comfortable and peaceful sleep for your baby, day or night. Constructed of quality materials and workmanship in the USA, this mattress features 150 interwoven steel coils an all-around heavy duty steel perimeter support system covered by 2ÌÒ of Visco foam, (memory foam). Memory foam has an open-cell structure that reacts to body heat and weight by 'molding' to your body, helping relieve pressure points, preventing pressure sores, etc. Surrounding the mattress is a breathable, waterproof fabric of unsurpassed durability called Nano-Tex with ventilated borders for a fresh sleeping environment for baby. The Baby Visco-Pedic mattress is hypoallergenic, has an anti-bacterial waterproof cover that aids in the prevention of mold, mildew and odor and is phthalate and lead free. Clean up is easy as it wipes clean with warm water and a mild soap. Complies with the Federal Standard Flammability Standard 16 CFR 1633 and carries a notable 15 year warranty.