Signature Sleep RenewGel layer and Independently Encased Coil Mattress, 8-Inch Coloma ticking in outer cover helps keep the body fresh and cool Top Layer of Renew Gel ensures a cooler sleeping surface Independently Encased Coils provide an uninterrupted sleep Available in Twin, Full, Queen and King Size CFR1633 Compliant Coolmax ticking in outer cover helps keep the body fresh and cool. Top Layer of RenewGel ensures a cooler sleeping surface. Independently Encased Coils provide an uninterrupted sleep. Available in Twin, Full, Queen and King Size. CFR1633 Compliant.