Dimensions: 24L x 36W x 3H in. Gray color. Waterproof, non-allergenic, and antibacterial cover. Fits Graco Nimble play yards. Easy to clean with mild soap and water. Give your baby a comfy playtime environment with the Dream On Me Nimble Play Yard Mattress. Constructed using high-quality materials, this soft mattress fits Graco Nimble play yards and has a non-allergenic, anti-bacterial, and waterproof cover that's easy to wipe clean. The soft gray hue adds a charming touch, and its special design prevent mold, mildew, and odor for lasting enjoyment.