G'day Kevin,

Yes, that's correct.
Standard, self-inflating car camping mats in a single size generally range between 63-69cm wide, so considering this is a hiking mat, the width is pretty good.

G'day Ken,

I think it depends what your primary usage for the mat is.  Most people looking at these mats are multiday hikers, and so would go for the regular because keeping weight and pack size down is important.
2cm is cutting it fine for residential sleeping, but on the trail expectations can be different.  You'd be pretty tired after a long day of walking, so likely to sleep well regardless, and inside a sleeping bag you won't notice as much if your feet are close to the edge.  Most people also sleep abit more scrunched up than perfectly straight, so I think you'd be ok with a regular.

If you are a bike packer, motorcycle tourer, or Kayaker, etc where pack size and weight can be alittle more flexible, then go for the larger size if you are concerned.

Hope that helps in some way!

G'day Cass,

The stuff sack isn't waterproof, we would definitely recommend a dry sack if you're expecting to get wet!

G'day Adam,

We can work this one out by checking out the dimensions.
The sleeping area of the Pro Hiker 2 is 215L x 140W
The large Etherlight is 198L x 64W and the Regular 183L x 55W , which gives you 20cm of room to play with in the tent.
Hope that helps.

G'day Brendan,

The Ether Light XT Insulated has a slightly higher R-value and is slightly thicker than the Ultralight Insulated, so it would be slightly better suited for colder conditions. Technically speaking, they're both 3-season mats, so if you want a true 4-season mat you'd be best looking at the Ether Light XT Extreme Insulated.

G'day PT,

The new ASTM R-Values are listed on the product pages for the Ether Light XT Insulated (3.2) and the Comfort Light Insulated (3.7). Therefore, overall, the Comfort Light Insulated has slightly better insulation using the new testing protocols.

G'day Kristen,

The women's model and the unisex models are the same in terms of thickness and materials. The differences come down to the shape. The women's models are shorter, and a little wider at the hip than the unisex model, so a little less mummy shaped. All of the different models have a slight different R/ASTM value, so double check there, and have a read of our blog about how to interpret this in terms of temperatures. Overall the rectangular model will give you the largest sleeping area, however they are heavier than the other shapes.

G'day Leonie,

You should be ok with a Regular and a Large Ether Light Mat in your Zeus, however you won't really have any room to spare. Most of the mats are around the same width, with the Large models being a little wider than the Regular. You'll fit, it will just be a bit of a squeeze, unless you wanted to upgrade to a larger tent!

If the size fits, then I can't see any reason why you couldn't use this in a swag, Ian. It would make your swag much more compact for transport.

G'day Zeb,

You'll just need to select the small size mat in the drop-down menu which will update the size. The small mat is 0.470kg, 168L x 55Wcm.

G'day Zeb,

Yes, the Ether Light XT Insulated Mat has the Pillow Lock patches. You'll just need to adhere them to the mat when you receive it.

G'day Daniel,

The Exped Downmat 9LW is a great option, but the Ether Light XT Insulated Large Rectangle is also a great option. As you indicate the Ether Light XT is much lighter than the Exped so you will save yourself a fair amount of weight. In terms of comfort, to me they both feel pretty comfortable, so I guess it depends on what you're used to. The Ether Light XT Insulated Large Rectangular is a newer model so it's possible we only had the tapered models when you trie them out in-store. The Exped has a much higher R-value so it will be suitable for use in snow conditions, while the Ether Light is really designed for Spring/Autumn conditions, and some Aussie winter. Overall we think they're both great options, but the weight and R-value tend to be the tipping factor for most. 

G'day Adam,

The foot end of these mattresses measures 30cm across at the bottom end and about 10cm up the width measures 40cm across. Hope this helps!

G'day Adam,

Thanks so much for your question!
Unfortunately, we don't have a Wilderness Equipment Space 2 on display but based on some quick calculation of all the specs provided the Regular Ether Light XT Insulated would be the way to go. 
The Space 2 head end width is 130cm, the Large Ether Light XT Insulated mats are 64cm wide, so that cutting it too fine in my opinion.
In terms of the tapered mattress fitting inside the tapered tent, my thoughts on this are that Sea to Summit are a very experienced outdoor/adventure gear company, and alot of thought and research goes into their product design.  In my own personal experience using an Ether Light mat I'd say you have nothing to worry about with 2 x regular mats in the Space 2.
Hope that helps.

G'day Kay,

We don't currently have a display model tent to double-check this for you, but I'm fairly confident the large rectangular model will be a little bit too big with the tapered corners on the floor of the atom. We've just sold out of the old model Ether Light XT Insulated Large, so we'll get the new model up online in the next day or so. We're expecting the stock to arrive in the next two weeks.

G'day Grant,

It is definitely too big, I'm sorry. You don't want your mat to be touching the tent inner at all, because it creates a wicking point or a drip point & your gear will get wet.
In this particular case you'll struggle to get the mat in at all, and we don't recommend it for use with the Atom.

G'day Thomas,

I've just had a chat with Sea to Summit on the best way to store this mattress. Their recommendations are to not store it in the stuff sack but to store it flat with as few folds as possible, make sure it's dry and aired out, and to keep the valve open.

G'day Joel,

R-Value is the measurement of insulation's ability to resist heat flow. R-Values range from 1.5 upwards and the higher the insulation's R-Value, the better that product is at retaining your body heat. So an R-Value of 8 will do a much better job at keeping you warm than an R-Value of 3.8.

G'day Sim,

The new Ether Light XT Insulated Mats are found to be quieter than the other Sea to Summit air filled mats. They have a slightly different design with larger baffles that not only means they are quieter, they are also lighter for their equivalent thickness.