Double layered, Sleepwell's ingenious foam for the plush surface feel. It enhances airflow and heat dissipation to eliminate humidity and has superior loft compared to other quilting foams. 1. Superior loft compared to other quilting foams 2. Enhances airflow, reduces humidity and offers better moisture dissipation.Impressions foam naturally adjusts to the body contours, offering soft snug contour hugging and even pressure distribution. This shape adjustment also enhances blood circulation. Impressions foam is an innovative breakthrough for being independent of the ambient temperature and offers the same level of comfort in all seasons.