GREENGUARD GOLD certified, the Safety 1st Heavenly Dreams Mattress meets standards for low chemical emissions to provide the safest sleeping environment for your baby. The high density thermo-bonded core provides firm support for your little one as they sleep. This mattress is lightweight and durable for long-lasting use throughout your child's development. The tear-resistant vinyl cover resists stains, odors and mildew. In addition, the cover is also water resistant and wipes clean. Sweet dreams are sure to come quickly with the Safety 1st Heavenly Dreams Mattress!