The Sealy Spring Bloom 12” Medium Mattress, CA King blends softness and firmness in the right proportions. This balanced mattress includes a soft knit cover, layers of gel foam cushioning, and encased coils for additional support. Sleep well and with ease on this soft yet supportive mattress. Product Details: • Back and core support allow you to rest comfortably • Medium firmness is not to soft or hard and suitable for many people • Gel foam layers cover encased coils which provide additional support