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The Queen and King size mattresses (including their Extra length options) the inner foam layers are split in half, allowing you to adjust the left side to a specific firmness as well as the right side to a different firmness. The split also allows for zero motion transfer, for disturb free sleeping. The thick luxurious cover allows for a seamless transition between the two inner foam layers. So, you won’t feel the groove.

edge gap ridge

The luxurious 500 thread count cover perfectly keeps the foam layers together. When both sides are the same comfort setting you won’t even notice the split.

edge gap ridge split sink groove