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But it would feel good.

🤔 Not sure about this. You would loose the breathability of the goretex and it would be very damp.

Hi, please, make an inflatable dry suit!

I bought a piece of underlayment from a local hardware store.  Basically a 1/4″ x 4’x 4′ piece of plywood which has a smooth finish on one side.  I plop that on top of a plastic folding table. Works well enough that I’ll use it for my second packraft.

15 years ago in Lapland (it’s a catamaran with rigid narrow skeleton):

I think catamaran is a good idea and especially if you can make it work with an inflatable frame. One thing to consider: the two bow waves of the hulls can merge to a higher one between the frames and add drag plus get you wet. It helps to toe in the hulls a bit, so that bows…[Read more]

Exactly Alpo. Better speed and tracking is my target, and hoping to achieve that, without using any rigid parts. http://www.cubenmaker.com/?2

& Kayacat gave a lot of ideas but with rigid skeleton, which I would like to avoid. But first I have to weld the pontoons 🙂

I might have exaggerated the edge shape. you can see the effect in real life in some Thermarest Neoair photos. In your use, the large side pontoons will be more rigid than the mattress and will force the edge to be straight. So I don’t think you need to make changes to the original plan. More baffles and curved edge would just mean more work (and…[Read more]

Hi Alpo,

Thanks for the answer. It is not at all late. It is a winter project, moving very slowly. The main use of the inflatable mattress, won’t be as a mattress 😉. It will join two inflatable pontoons of a small inflatable catamaran, I intend to make. Just cut the tpu nylon for the pontoons. I want to make something similar and use it…[Read more]

Howdy,

This is a bit late but yes, I think your measures are good, just note that:
– The width will vary a bit due to baffles bulging. It will be quite a narrow mattress but you know if that’s ok for you.
– end ‘chambers’ will be a bit smaller than the rest if you don’t give them 5cm extra fabric due to the missing baffle fabric