I don't have a link, I'm sorry. I'd estimate my wedge gives a space between the mattresses at least the height of my hand from the bottom of my palm to my tallest fingertip. So, at least 6 inches? Look for a wedge 8 inches or so, to accommodate the wedge sinking into the bottom of your top mattress, if that makes sense?
Now, my wedge is only the width of a person. So unless I set myself right over that wedge (which is between my queen mattress and the queen box spring), I can end up sleeping on a slant to the right lol. I just found that the wedges I tried that you slept on top of the mattress were never high enough or wide enough so I just put one between my mattresses, using what I had.
However, I have seen wedges that are the entire width of your bed, like a queen bed. You could just use it on top of your mattress, like this one
, or even use a full width wedge to go between the mattresses like this one
. There are cheaper options to try when looking to find out what height of wedge works best for you - blow up wedges like this one
. Whatever you choose, if it goes between the mattresses I'd look for something very firm (not a blow up one).
How tall should the wedge be? Well if you are like me and need to be elevated due to back pain or other significant upper body pain, you probably don't need to be elevated too much. If you had GERD, however, then I do believe the rec'd height to be 8 inches? You'd have to double check that. There are a few companies my disability works with when it comes to medical devices and supplies. Perhaps call a similar company in your area and talk to a representative to help recommend something for you.
Or have your doctor refer you to someone in case insurance will cover it. For instance, if my doctor prescribes something to me, even a bed wedge, my disability will cover it - but only through 3-4 different companies they will work with. I can't just go get what I want from wherever I want and send them the bill. It may be similar or different in your circumstance.
Also note that it is kind of unnatural for you to be elevated too high, it's not good for your spine to be properly aligned. I have to also have pillows under my knees and I even have my feet on pillows too. Pillows because wedges can be waaaay too expensive when a couple of firm pillows work just fine for me. Again, I sleep alone and don't have to contend with a partner who may grumble about my having too many damn pillows lol.
You'll have to experiment to some extent, I suppose. Another thing you could try is call a sleep study clinic and ask about the types of wedges they recommend or have for their clients to try. The last sleep study I did (I have sleep apnea) I had asked for a wedge or extra pillows to elevate me and they had quite the selection of wedges - and the MOST comfortable bed I'd ever slept on in my life. I told them I'd be taking it with me when I left haha.
Lastly, you might consider a pregnancy pillow. Those DO wrap around your entire body. Like this one
Ooh, I have one more suggestion. If you are a die hard side sleeper, there are wedges that help you with that as well. Kind of like yoga wedges that help you keep the same position. So like a pregnancy pillow but a wedge instead.
That's about it for ideas for you @Tammy7
. I sincerely hope you find something that enables you to sleep comfortably again. Sleep is SO very important to our health.
NOTE: All links in this post go to Amazon.ca as I live in Canada. They are NOT affiliate links.
P.S. I am having to buy a new mattress due to having it elevated. After only 6 years of buying the new mattress, springs are jabbing me in the butt. So now I have to look for a new mattress. This time it will be a foam mattress instead of a spring one and I have found what I want to get myself for Christmas. No matter what, this mattress won't have springs to jab me in the butt!