· Robust Support and Quick Rebound: Crafted with a combination of memory foam and support foam, this twin size mattress offers instant responsiveness and adaptive support. It quickly regains its shape with every movement, minimizing motion transfer and enhancing sleep quality. Regardless of your sleeping position, the mattress for twin size ensures a rapid rebound and close contouring for uninterrupted, deep sleep all night long · Certified for Health and Safety: The Rolanstar 8 inch twin mattress features CertiPUR-US certified gel memory foam, ensuring all components are free from fiberglass and harmful substances. It provides a safe and healthy sleep environment for your family · Long-Lasting Comfort with Medium Firm Mattress: Designed with a dual-layer foam construction, the toddler twin mattress balances cushioning and support. It contours to your body while aligning your spine, relieving pressure points, and resisting body impressions for enduring comfort · Removable & Washable Cover with Zipper: Equipped with a convenient zipper, the bed mattress cover can be easily removed for hassle-free cleaning, whether by hand or machine wash. Perfect for maintaining a fresh and hygienic sleeping environment · Twin Mattress in a Box: Enjoy the convenience of a twin size mattress rolled and compressed in a compact box for easy delivery and setup. Allow 24 to 72 hours for the memory foam to fully expand. Warmer rooms speed up the process, while cooler temperatures may take longer. Watch it unfold and rise like magic