For those wanting to become a waterbed owner, there is something that needs to be told of the waterbed mattress. No, it isn't the part where the cat or the dog can poke a hole in it with their claws. It's the part where the waterbed mattress actually has different firm levels just like a spring mattress does. However, there are some things to know regarding the purchase of a waterbed mattress in regards to meeting your comfort needs. ? For those who love firm, buying the firmest waterbed mattress available within the desired price range is the right decision. Even the firmest of waterbed mattresses does not have the same firmness of a traditional mattress. ? Free flow waterbed mattresses will make you feel like you are sleeping on a boat because the water flows freely within the mattress. This mattress is not for those seeking support and it does not have a way to balance the weight, so if one sleeping partner is heavy and the other is not, the lighter partner could feel lopsided. ? A hydraulic waterbed mattress has small round coils inside of it that regulates the water movement. The more coils within the mattress, the firmer it will be. ? A fiber filled waterbed mattress has fiber inside that minimises water movement while also making the mattress firmer. The more fiber, the more firmness there will be. Keep these things in mind and you will be on your way to enjoying a comfortable sleep on your waterbed mattress in no time. 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.