The Julian Bowen Capsule Essentials Double Bed Mattress is expertly designed for your comfort and offers a 13.5 gauge bonnell spring unit with a 900 gauge Saturn Pad Insulator pad and 300G polyester pad filling to ensure the best quality rest. The Julian Bowen Capsule Essentials Double Bed Mattress is finished in a Damask fabric with a quilted border and hand tufted felt washers, to ensure you get a great night's sleep.