South Bay 12" iSwitch Flippable Two-Sided Mattress - Medium Firm / Medium Soft

Split mattress ordering and quantities

Individual mattresses: Twin Long (Twin XL), Full, Queen, regular Eastern King and regular California King are each one mattress. A standard split King can be built by purchasing two Twin XL mattresses (quantity 2).

Complete two-piece sets: The separate size choices marked “EKS (2)” or “CKS (2)” carry manufacturer SKUs ending -SET and represent one complete two-piece split mattress set. Order quantity 1 for that manufacturer set; the displayed set price already covers the two pieces. Do not order quantity 2 of a two-piece set to obtain a single split bed. A split California King made from individual components would instead require two matching California King Split components where separately available.

Split-head: A split-head King or California King is one mattress separated only at the head, not two fully separate mattresses. Advertised prices include standard carrier shipping in the contiguous United States.

Change the feel of your mattress by flipping the 12-inch South Bay iSwitch. One side offers medium-firm comfort and the other medium-soft comfort. Gel and gel-swirl memory foam sit around a breathable Air Grid core, while reinforced edges provide support.

Zip-off washable cooling cover and manufacturer's 10-year limited warranty. Regular sizes are single mattresses; explicitly marked split-size sets are separate two-piece configurations.