I don't think so ,but you could make one easily or buy an extended mattress when it's time for a new one. Try adding a single mattress to the end of the king bed or add a flip up extension with padding on it, make it up separately and don't tuck up the bedding.
It's not a spring mattress but it certainly is the softest mattress. If you use my refferal code you can get $200 off luxury mattress from $699 and up. rb.gy/ogimdb
I wouldn't know which mattress is better for anyone other then myself because evryone has different sized and shaped backs.plus people have different amounts of stress and different sleeping positionstoo!
umikkk mattress
It can be, as in spring shower or spring mattress. But it can also be a noun or verb.
A box spring.
Check with your local independent mattress store. Often times these companies need to move their stock to make room for newer models, etc. Sometimes in the bargaining process you can work in a free box spring or a free bed frame.
A split queen mattress is not as common as a split king sized mattress. A box spring for a queen bed can be purchased when the area for the bed is unreachable by the queen box spring in its original size.
Box Spring
yes
No, there are no risks when using a latex mattress. Using a latex mattress is just as safe as using any other normal spring mattress.
If you are on a spring mattress, it could be that it is just a sore in your hip from the spring in the mattress. It could also mean you need a new mattress, if its soft for example try getting one that's a bit firmer.
Yes, they may not give a warranty with a new mattress however.