Dream On Me Asheville Firm Fiber Crib Mattress, Model #1A4-GREY provides added support that babies and toddlers need for good night. This mattress is built with a firm polyester 4”, a hypoallergenic, antibacterial, waterproof cover for a healthy sleep environment. Asheville Firm Fiber Crib Mattress, Model #1A4-GREY is durable, waterproof vinyl cover helps lock out stains and moisture keeping the mattress in top condition for long-lasting usage. All Dream On Me mattresses is constructed with quality materials.The Dream On Me Asheville Firm Fiber Crib Mattress, Model #1A4-GREY Meet the strictest standards offered by the GREENGUARD Certification, which recognizes products, contributing to improved indoor air quality.