G'day Kaye,

All self-inflating mat brands have advised us that their mats are not to be kept inside a packed roof top tent of any kind.
There have been a few warranty issues on mats used in roof tops that brands haven't covered, for this reason.  Even if the mat remains flat, it can be subject to large temperature fluctuations in a roof top tent over the course of the year which can effect the glue and bondings on the foam.
Ofcourse you can use it in your roof top tent, but we'd strongly advise not leaving it in there for pack up.

G'day Liam,

Its not waterproof, no.  If you're putting it on your roof racks we'd recommend using a waterproof bag like the Darche Nero rolltop 120, or wrapping it well in a tarp.

G'day Neal,

You'll get more bounce the more air you put into the mat.  Most people who get the Duo find they have to pump a bit of extra air into it for the best firmness with 2 sleepers, and as a result there can be a little bounce.
I'd say the 15 Duo may be the better option being thicker, you'll likely be able to get the right comfort without having to add too much additional air.

G'day Matt,

No, its not.  All self-inflating mat brands have advised us that their mats are not to be kept inside a packed roof top tent of any kind.
There have been a few warranty issues on mats that brands haven't covered for this reason.  Even if the mat remains flat, it can be subject to large temperature fluctuations in a roof top tent over the course of the year which can effect the glue and bondings on the foam.
Ofcourse you can use it in your roof top tent, but we'd advise removing it for pack up.

G'day Nina,

Yep, thats correct - you'll need to ensure all the air is compressed out or pushed out of the mat before you fold and roll it up.
If there's any air left in it at all when you fold it, it gets a bit tricky.

G'day Mariah,

The Coleman 4P is quite small for stretcher use - the best chance you'll probably have is the Zempire Z Leg Twin Stretcher.
Depending on the stretcher height, on average you'd probably loose around 25cm of space, meaning you'll need an option that is 2m or less long.

Hope that helps!

G'day Sheila,

Comfort is relative to the individual, so it's not possible for us to say which one you would find more comfortable.
The Exped is the rolls royce of camp mats and sits at the top of scale in terms or materials and design quality, which is reflected by their commitment to a 5 year warranty.
We haven't had the Oztrail mats for very long, so there's no real long term feedback there, but reviews have been positive so far.

G'day Blake,

We dont have a thickness for you sorry, it very much depends on the individual using it and how effectively they can compress all the air out.
For your reference though we have feedback from loads and loads of customers who replace swag mattresses with these Exped ones.  the 10cm thick mattress actually packs up smaller generally that the swag does with its original mattress in.
I'm assuming the 15cm one would be no worse than the original swag size.
its best to pull the mattress out and deflate as much as possible before putting it back into the swag to roll up, that will give you the most compressed possible state.

There's nothing specifically designed to deflate a self-inflating mat, BB, at least that I;m aware of. I guess you could use the deflate option on regular airbed mats but the pump will have to work hard to compress all the foam inside the mat. Self-inflating mats really need your body weight to deflate, we have a video her on how to do it, hope it helps - https://youtu.be/SvJYkyWdEZ0.

G'day Hilton,

We don't have a Kamprite double on display so can check in real life for you, but I can't see any problem from a footprint perspective.  The only thing to consider would be the sharp taper on the end walls, and whether or not the higher mattress would be pushing on the tent wall.
Looking at the dimensions of both though, the tent itself has a bit more length in it, so it shouldn't really be a problem.

G'day Jenny,

There's absolutely no reason we can think of why you couldn't.  I am aware that some people have used these as a mattress at home between living situations, etc, and there's been no issues there.

G'day Rys,

No, you cant without the outside edges being squished in - which could be a detriment to your mats on longer trips.
The floorspace measurement is slightly too narrow to begin with, but also doesn't account for the internal tent frame.
You probably realistically have about 245cm of functional clear width.
Hope that helps.

G'day Jacqui,

I think having a stretcher that is on the narrower side would be a better option, as you know the mattress will be fully supported by the stretcher frame to each side.
Generally with the doubles, I think it's a better bet to have a slightly smaller stretcher. It's just my personal preference with what I think is more comfortable, and think the Zempire would be a great choice.

Update! We now have the Darche XL 1400 available for pre-order with no centre bar, perfect for swags and larger mattresses!

G'day Manoj,

The dimensions of the EXPED MegaMat 15 Duo LW most closely resemble a standard double mattress. 
That would be the best sheet size to run with if you're wanting to use standard bed linen. 

G'day Shaun,

We wouldn't recommend permanently leaving the MegaMat Max 15 in your camper trailer as folding up the trailer may cause damage to the mattress. We'd recommend deflating the mat and storing it in the supplied bag for transit.

G'day Craig,

This shouldn't cause any problems, the internal foam, and external fabric have a degree of stretch, and will bounce back from being sat on, rolled, slept on etc without a worry.

G'day James,

The EXPED MegaMat Max 15 Duo LW is a bonded mat, so there's no problems storing this rolled up.  The only consideration maybe the extra bulk it will add to your packed swag.  We haven't tried it out ourselves, so can't say for sure if it will still fit the swag bag.

G'day Richard,

The Megamat Max has a pretty high R-value, so you might find it's a little warm in northern Australia. It would be worth having a look at the Sea to Summit Comfort DLX SI, they have a slightly lower R-value so it might be a slightly better option in warmer conditions.

G'day Darren,

Unfortunately, you won't be able to leave your MegaMat Max 15 set up inside a rooftop tent without risking damage to it. We would recommend packing the mat up each time you pack away the tent.

G'day Phil,

I've just measured our display and can confirm that the in-use dimensions are correct at 197 x 132cm.

G'day Graham,

Exped doesn't specify a maximum weight limit for their mattresses, however, we regularly have people buy these mats who are similar weight, and will often be sharing with another person, with no worries.

G'day Joanne, 

Thanks so much for giving us your feedback on what videos you'd like to see from us. I've got in touch with the videography team and they've said that it's definitely on the list, though they can't give me a timeframe unfortunately. I know it's a bit frustrating, but thanks for your patience. 

G'day Alex,

Thanks for getting in touch, the Megamat Max 15 Duo is brand new to us, so we'll ask the video team to pop it on their list. Feel free to give us a call and we can chat through the features. They're pretty similar, with the Max 15 being thicker, and having a higher R-value.