【Medium Firm Feel】: Molblly Individually Wrapped Coils Innerspring Mattress is supported by hundreds of individual pocket springs, which is durable in use. Independent pocket spring can absorb partner movement and relieve painful pressure points. Memory foam with 3D soft knitted fabric on the top increase its comfort level.【Fiberglass-free】.【High Permeability & More Comfy】: The Molblly mattress made of natural materials, porous cooling foam and spacious coils design promote the airflow in the mattress, helping to efficiently regulate the body’s temperature by removing unwanted heat and improving air movement, creating a dry, restful sleep, thus ensures you have a cool and comfortable sleep throughout the night..【Five floors of comfort】: The mattress top is made of breathable high-quality fabric. The second layer of 1 inch memory foam ensures a comfortable and cool sleep. The third layer of 2 inches of comfortable foam & support foam layer provides support to avoid the feeling of being trapped in quicksand. The fourth layer is supported by a Individually Pocket Spring layer to strengthen the support. There is a non-slip layer at the bottom of the mattress to ensure that the mattress doesn't slip..【Skin-friendly & CertiPUR-US Certified】: Molblly memory foam and innerspring hybrid mattresses are certified by CertiPUR-US and Oeko-Tex Standard 100 without harmful substances like formaldehyde, mercury, and other heavy metals, Healthy and Eco-Friendly, guarantee you and your family sleep with no concern. At the same time, the knitted cover is naturally Skin-friendly - Perfect choice for your sweet sleep..【Professional customer support】: We have a professional production and R&D team as well as a professional customer service team. Ensure that you can get the best quality and most cost-effective mattresses with best shopping experience. Molblly spring mattresses have a 10-year warranty and 30-day refund policy. If there is any dissatisfaction, please feel free to contact us. NOTE: Mattress is recommended 72 hours for air out and reshape.