Two Layer Design: Combining gel memory foam with dense support foam, the twin mattress topper delivers a comfortable upgrade to your bed - while still being supportive Contouring Comfort: Made from 3.5 lbs memory foam, this mattress topper conforms to your body curves and cradles the pressure points. Be ready to wake up refreshed and energetic every day Highly Breathable: Memory foam topper with advanced gel infusion and open-cell structure, which ensures optimal airflow throughout the night Easy Maintenance: This foam mattress topper features a washable, removable cover for easy care. Plus, the adjustable corner straps ensure a snug fit on your mattress What You Get: BedStory 4 inch memory foam mattress toppers come with CertiPUR-US foam. And we ve got you covered for manufacturing defects.