Give yourself the great night's sleep you deserve with the Lane Cool Posture 10 in. Gel Engineered Latex Mattress. Designed specifically to respond to your body temperature and movement, this mattress features Gel Flex foam that creates a cool sleeping surface and springs back to its normal shape after you move. Inside, the mattress features ventilation to allow air flow. This mattress is eco-friendly and includes a poly-cotton knit cover that's removable and washable.