Hi Mark
 
Thanks for your question.
 
We can only make the bespoke size mattress you require in our Artisan range.
 
The California Kingsize is 6 ft wide by 7 ft long. So the cost would be 10% extra on top of the super kingsize mattress price.
 
The main thing to note is that any mattress made to a bespoke size is not covered by our 60 day love it or return it guarantee.
 
If you require any further assistance please call the office on 0161 437 4419.
 
Regards Gary