Includes: L-Class Extra Firm 13.75 mattress and 9” standard foundation. The L-class extra firm Beautyrest Black mattress set is the perfect balance of support and comfort. Highlighted by a high definition cool to the touch cover, this mattress shines with four different pressure relieving foam layers. This is exactly what you need to minimize tossing and turning as you get a great night’s sleep. Dependable and cozy, it is paired with a sturdy 9” foundation to form your ideal resting place after a long day.