Choosing a correct bed mattress is an important part in your life. The average person spends one third of her life in bed. A bed mattress can cause harm, among other problems, back pain or stiffness. During the selection of the bed, the key elements that should be kept in mind are comfort, support, size and material. Air mattresses can be uncomfortable with a foam mattress. Uses of the air mattress are generally temporary, such as for camping or guest house. Water beds are not the most popular because they are very complicated in design and difficult to tackle. Spring mattresses are made of layers of different upper and lower layers are in soft cotton. These are supported by coil springs and isolation pads. Types of mattresses: In the market, four types of mattresses are available namely, 1. Foam 2. Spring 3. Air 4. Most people use water spring mattresses. However foam mattresses are becoming increasingly popular. A mattress foam follows the shape of your body, without creating further pressure on important points. It provides better support for your back. Foam mattresses are made of different layers of foam. The top layer is made of soft memory foam. Lower layers are more rigid for support. Size mattresses: bed mattresses are available in five sizes, King size. Queen-size bed. Full (double) size. One size. Crib-size width and length vary for each type of bed. Room size is an ideal size mattress for couples. Here are some examples of bed and mattress measures: King size bed 78 "wide x 80" long 198 x 203 cm Twin California King Size 72 "wide x 84" long 183 x 214 cm Queen Size Beds 60 "wide x 80 "long 152 X 203 cm Full size or double bed 54" wide x 75 "long 137 X 191 cm Twin Size Beds 39" wide x 75 "long 99 X 191 CM Long Twin Size Beds 39" wide x 80 " , 99 x 203 cm long while buying a mattress make sure you buy the right size. There are also various designs and types of mattresses available on the market. Material mattresses: Many mattresses are made from polyvinyl chloride covered with layers of cotton or polyester. Organic wool, organic cotton, and latex are also used to make natural materials. Because of the fire, dust and mold resistant organic wool is an excellent choice. Natural latex is a new product in the field of bed linen. Latex is resistant to bacteria, dust and mold. Latex covered with wool is also a resident fire.