The MyPillow® 10" Mattress features 5 unique layers to give you the comfort and support you need to fall asleep— and stay asleep all night, guaranteed! The quilted QDS® cover has a special comfort finish that's soft and cooling. Layer 2 uses a high-airflow comfort foam that keeps your body at a comfortable temperature throughout the night. Layer 3 is an extra-soft, high-density comfort foam transition layer for the ultimate plushness. Layer 4 is a plush comfort foam with a firmer transitional foam to increase the overall performance of the mattress. And layer 5 is the supportive base foam that reinforces and stabilizes the mattress.