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Step 5:

The finished project ended up with a pad around 6'x23" with a rolled up width of a 11". 

I went to Wal-mart and picked up two 4' straps to keep the pad together and be able to attach it to my backpack.

I have not had a chance to take it out on any extensive test but overall it look like it will last for a while.

This is my first instructable so any advice and input will be greatly appreciated.

Update
     - The weight came in just under 9 lbs. 


Considering that you can buy a lightweight, closed cell foam mattress that will keep you warm at -20 deg F at any Army surplus store or online for less than $20, and there is no further work required, this article has little merit. <br>The best closed cell foam, Ensolite, a blue colored soft foam is flexible down to -40 F and is durable enough to last a lifetime. <br>There are many types of closed cell foam used for packaging which can be acquired cheaply as well. Even small pieces can be assembled into a mat with the ubiquitous duct tape or a plastic foil tape for sealing HVAC joints.
Cool diy for car camping...I'm going to make one for my wife...for backpacking way too heavy...my gross pack weight averages less than twenty...
Cool diy for car camping...I'm going to make one for my wife...for backpacking way too heavy...my gross pack weight averages less than twenty...
Cool diy for car camping...I'm going to make one for my wife...for backpacking way too heavy...my gross pack weight averages less than twenty...
Cool diy for car camping...I'm going to make one for my wife...for backpacking way too heavy...my gross pack weight averages less than twenty...
Re other comments: If it is too heavy for backpack/bike camping, it would still be quite useable for trailer or tent camping. You could also use it as a guest bed in a basement as it looks like it would be warm.
As other people already noted, 9lbs is really WAY too heavy. You could shed a lot of that weight by not using any glue at all. Since you're already sewing, find a way to sew the linings together.
9 lbs. is way too heavy for a sleeping pad.
One thing you could try to get the weight down without killing its warmth is to find a thinner rug mat and when you are attaching the space blanket, sew in thin but wide semi-filled air bubbles into the mat. You could experiment the spacing of the air bubbles and even the mat itself to have one of those accordion style&nbsp;sleeping pads.
This is a very cool idea and it sounds like it works great for you. however 9lbs is a little much for my liking unless I was dragging a sled instead of carrying a backpack. I like to use of the space blanket.
I like this, very well thought out. In the intrest of backpackers how much does this thing weigh when your finished?
I do not have a scale I will have to get back to you on that one.
9 lbs.
WOW that was much more than I would have guessed it would have been!
lt is a little heavy but I think its worth it for a two or even a five day outing.
It looks warm, but how much does it weigh? Weight is so critical if you are backpacking. I have a Thermarest I got from Campmor for $20. In the winter, I just add an extra layer (emergency blanket works well) for insulation.
I do not have a scale I will have to get back to you on that one.
9 lbs.
mmmm shiny!

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