Mattress deal: Get a 2000 pocket mattress. Support: The mattress is designed to give you your best night's sleep yet! Size options: Available in single, small double, double, king or super king. Mattress type: A 12.5 open coil bonnell spring with a medium firm tension, offering extra support. Mattress fillings: Responsive memory foam with polyester and cotton fillings. 2000 Pocket Mattress | Single | Living Social