King size mattresses are about 183cm wide and 203cm long, making them about 30cm wider than queen size mattresses but the same length. King size mattesses are available from brand leaders Sealy and Tempur as well as ranges exclusive to Snooze: Slumberland, Madison, the Australian Osteopathic Association range and My Side. If you are confused by the choice of king size mattresses, then head down to your local Snooze and get a bedMATCH profile. Available only at Snooze, the bedMATCH system helps take the guesswork out of buying a bed or mattress. This free in-store service will ask you and your partner some questions about how you like to sleep and any aches or pains you may have. Thanks to this process, we can help identify a selection of king size mattresses that may better suit your needs.