Comfort and Durability Our 10-inch pillow-top mattress is both comfortable and durable. Overall, individually wrapped coils offer superior comfort and pressure relief over a traditional coil system. Although a traditional coil can be very comfortable when paired with the proper pressure relieving comfort layers, an individually wrapped coil is superior due to its ability to provide individualized contouring and motion separation for undisturbed rest. Also, wrapped coils are extremely durable and will last for years. They do not wear down over time making them a great support system for your body. Get it Right the First Time It is also a good idea to know the size and the height of your mattress ahead of time to make sure you are ordering the correct size. Keep in mind that you should combine the height of your bed frame, foundation, or adjustable bed base with the height of your mattress to get a gauge of the how tall your sleep system will be. Twin Size - 1.0m W x 1.9m L x 0.25m H Twin XL Size - 1.0m W x 2.03m L x 0.25m H Full Size - 1.37m W x 1.9m L x 0.25m H Queen Size – 1.52m W x 2.03m L x 0.25m H King Size – 1.93m W x 2.03m L x 0.25m H California King Size – 1.82m W x 2.13m L x 0.25m H