Cooling Gel Infused: Our foam mattress topper features cooling gel bead infusion and an open-hole design, it maximizes airflow, helps regulate your body temperature while you sleep, ensures you stay fresh and comfortable all night\nCharcoal Supportive Foam: Charcoal helps eliminate odors, absorb moisture and contour your body, providing support and pressure relief.\nAlways Certified: Use with confidence BedStory mattress topper are CertiPUR-US certified and OEKO-TEX certified. Just enjoy a healthier sleep environment with your family\n2-Layer Design: This memory foam topper features a soft gel memory foam layer and a firm high density charcoal layer, you can flip it over to have a different firmness or make it suitable for different people.\nNon-Slip: The king mattress topper bottom is made with a non-slip cloth to prevent displacement and 4 adjustable non-slip straps, this ensures a secure and snug fit, keeping you have a silent night. Please wait 48-72 hours for the topper to fully rebound