Experience individualized comfort with the new M3 Performance Mattress - featuring an interchangeable, modular design that lets you choose the firmness of each side of the mattress, an improved Ver-Tex™ cooling cover, and enhanced airflow features throughout every layer for increased breathability.
M3 Performance - Mattress 1.0 - Medium Firm - 1.0 - Medium Firm - Split Head King
76.0"W x 80.0"D x 12.0"H

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