CLASSIC COLLECTION Bella Features Soft Cotton Feel FibersBeautiful breathable soft touch feel designed to intensify both air flow and moisture helping to promote balanced temperature at the sleep surface. Comfort LayersQuilted layers of foam and downy fibers combined with optimal support create specific structural properties that can help reduce tossing and turning and allow for improved pressure relieving comfort. Green Bio High Density FoamSoy based bio foam offers improved durability, strength, and support over conventional foam cores. Based on natural renewable materials, soy foam provides a higher level of comfort. Bio Gel FoamGel infused memory foam not only provides significantly more body support, but it also creates an ideal temperature regulated sleep surface. Breathable construction permits optimal airflow.