Are you someone who loves that firm and supportive feeling you get from an innerspring mattress but also enjoys the firmness and soothing comfort of a memory foam bed? Serta has just the choice for you. The Serta® Century Signature Hybrid collection combines the cooling Cool Twist™ memory foam and their firm individually wrapped support system to help you receive a great night sleep. Serta’s premium memory foams are designed to achieve the perfect balance between cushioning and support. This helps relieve the pressure points that can cause the tossing and turning that can keep you from getting your best night’s sleep. The Serta® Cool Twist™ Gel Foam helps to provide an extra layer of firmness and cooling enhanced by the Cool Balance® cover to provide a perfect combination of comfort, cooling and support. Also, sleep comfortably knowing that this Serta® mattress is backed by a 10-year limited warranty. This group includes the Twin XL mattress and foundation.