Our superior mattress will provides a sweet dream for your baby, the double-sided design for different age baby. To be specificity, the firm foam side provides more support for babies aged 9 months and above, and the gel memory form side creates a soft & cool sleeping experience for toddlers of 0-9 months. Additionally the tri-fold design allows the pad to be folded into a small size that can be packed into the storage bag and carried with you anywhere you go. Moreover, the breathable and machine washable polyester material is extremely soft for baby, and the smooth zipper allows for easy removal and cleaning.