New Sealy Posturepedic Single/Twin Mattress For Sale Medium Firm Eurotop Model Retails $500 Plus Extra pocket coils are nested and zoned in the centre of the mattress, so that they work with the PROBACK Core to gently support the heaviest parts of the body Pocket Coils Cool Gel Infused Comfort; Reinforced Core Support Centre; CoreSupport Quilt; Posturepedic Pocket Coil System; SolidEdge Edge Support; High Density Foam 250-714-3890