The Active-Airflow™ Crib Mattress is the only crib mattress of its kind that incorporates both an air filter and a fan to provide a safer sleeping environment for your baby. The Active- Airflow™ Replaceable Filter purifies the air, while the fan gent ly pushes fresh air up through the mesh sleep surface removing exhaled carbon dioxide away from your baby`s face. Features: -Reduces the Risk of Rebreathing: The HALO® Active-Airflow™ Crib Mattress is the only mattress clinically proven to reduce the risk of rebreathing exhaled carbon dioxide - which can contribute to SIDS (Results published in Pediatrics, the official journal of the American Academy) -Your Baby Breathes Pure, Fresh Air: The HALO® patented Active-Airflow™ design allows fresh pur ified air to surround your baby while in the crib. It supplies a gentle flow of air to the sleep surface to reduce pockets of carbon dioxide that could accumulate near your baby`s face, creating a "clean" breathing zone -Removes Over 90% of Airborne Allergens: The high-efficiency air purification system removes mold, pollen, dust and more. The Active-Airflow™ Replacement Filter (included) is designed to deliver the cleanest air possible -Secure-Fit™ Mattress Pad (included) - Ensures Safety &Comf ort: The unique patented deep pocket design keeps corners and pad secure and tight for baby`s safety and comfort. While at the same time it has been specially designed for optimal airflow -Hum Your Baby to Sleep: A small UL approved fan inside the ma ttress provides a gentle airflow and soothing hum that helps baby sleep -Doctors recommend reducing early exposure to airborne allergens to help reduce the risk of asthma and allergies to infants -Exceeds Federal Mattress Flammability Standard -The u se of crib bumpers is not recommended -Fits any standard full-size U.S. crib -Easy to clean View the Active-Airflow™ Product Demo