Im looking for a thin yet comfortable matress for my over cab bunk and ideas or leads would be great. thanks

Suggest go to an upholstery supply store & look at their selection of loaded foam. Most handle it in various thickness & dimensions.

We had a local custom mattress place make us one using pillow top mattress springs about 200 dollars, really comfy.
-blizz

....WAL-MART $19.00 for mattress pad made of memory foam and another $39.00 for a foam mattress.....cheap and if you get a leak in the ''granny closet'' you can through the whole mess out or leave it in the sun with Clorox sprayed on it for a few days and it will be OK....geofkaye and the Rivercity Group..

https://www.foambymail.com/BasicTwinMedium.html this is where I got mine. They custom sized it for me too. I have been very satisfied.

Doc Weaver

We looked into foam mattresses, but we plan to use or conversion primarily in summertime, and foam mattresses hold heat where a coil spring will not.

Ours is a "Full" as we needed the small difference down the sides from a queen. it is only 4" thick. they can adjust the firmness/softness of it by the choice of coils that they use. the coils are 'bout an 1-1/2 in diameter and in a material sleeve then the sleeves are all sewn together to form the support, and then installed into a standard type padded mattress cover.

Really if you are going to spend a lot of time on it, do it right, nothing beats getting out of bed fresh and ready to take on the day. Besides, I have a hard enough time sleeping while out on the road, new noises every night, RV parks are usually close to a hiway, screaming kids in the campground, loud party's, new light night arrivals or early departures. etc. I figure why have the mattress contribute to the problem.
-blizz

Cool... thanks for all the info. Cant wait to get headed out on my first road trip with her on thursday. Headed to the snowy north ( Bismark ) but in a few weeks will be headed to the Huston area. Gettin her broke in well in the next few weeks.

The problem we had with coils is that they tend to bounce if you're sleeping while on the road. If you only sleep while parked, that shouldn't be a concern.

Doc Weaver

I found the same problem that Doc is mentioning with bouncing while driving. My wife and I usually trade off and my old spring mattress just wasn't cutting it when I was trying to get some shut eye. Someone recommended MattressInsider.com which has a few foam truck mattresses to choose from. The down side is you can't try them before you buy. I couldn't find anyone locally who carried them so I just ended up ordering their truck mattress with memory foam and I've been pretty satisfied.