Things such as price, the amount of comfort, and the amount of support offered by a mattress are very important aspects of the mattress buying experience. However, there is another factor that comes into play and that is the size of the mattress. Since there are many different sizes available and size is dependent upon whether or not the bed frame already exists and the size of the room, this very important factor must be taken into consideration. A mattress is made to accommodate either one or two people at the same time without any problems being presented in regards to space. Mattresses that do not have enough space can cause the occupants to not have a good sleep, so there are some guidelines that need to be followed in order to acquire a mattress that is the right size. Here are some measurements: ? Single and twin mattresses are usually around 39 inches wide. ? Double and full mattresses are usually around 54 inches wide. ? Single and full mattresses are around 75 inches long, which can be too short for adults, so they are commonly used for children. ? Queen size mattresses are around 60 inches wide and 80 inches long. This makes this mattress a comfortable choice for couples. ? The king size mattress measures 78 inches wide and 80 inches long in most cases, which makes another great bed for couples. These mattress sizes are the common sizes used for both children and adults, single people and married couples. It is important to follow these size guidelines to make the right mattress choice. Mattress Next Day is probably the largest mattress superstore on the internet. Selling a wide range of mattresses from leading manufacturers, we can offer quality mattresses at fantastic prices. Our next day delivery service is free or, if you prefer, you can select your own delivery date. We can even guarantee delivery before 9.30am on request. Take a look at our range of mattresses now at www.mattressnextday.co.uk, or call us on 0844 3911 222 for more information.