Dimensions: 34L x 24W x 3H in. Gray color. Waterproof, non-allergenic, and antibacterial cover. Fits Graco Nimble play yards. Easy to clean with mild soap and water. With a neutral gray hue, the Dream On Me Nimble Play Yard Firm Foam Mattress is both charming and functional, ensuring that your baby stays comfy in the Graco Nimble play yard. This mattress is both soft and supportive, and it's easy to maintain by wiping it down with mild soap and water. The waterproof cover is also non-allergenic and antibacterial to prevent mold and moisture from getting inside.