Sorry for the confusion folks,
We need to get that corrected on the Klymit site. The X Wave is 2 inches thick at the side rails and 1.5 inches thick in the body region. It is 10.5 oz.
On the retail floor, we typically sell 3/4 pads at a fractional rate when compared to our full size pads. It has been fantastic to see the through hiker response to the X Wave, however. The concept of a "luxury 3/4" at 26 inches wide and 10.5 oz seems to be appealing to the 50 plus nights a year crowd. At every trail festival we attended this year the X Wave sold out first. The tossing and turning room is unmatched. John Abela deserves credit as he requested this configuration first, and as we moved forward from the initial concept we added a very gradual taper, making the pad feel more like a full size pad with no ledge that your leg drops off like other 3/4 pads. We also added the wave sections as they give side sleepers a soft spot for their knees, which to fast hikers and bike packers translates to much less IT band soreness and thus less maintenance. There is simply no need to put things under your legs except on the coldest nights with the X Wave.
As far as sleeping on any of our body mapped Inertia Pads with a quilt you have Ryan Jordan of BPL (X lite with Nunatak), Shawn Forry, current CT record holder on an (X lite and quilt), Ron from Mountain Laurel uses this config, most of the Klymit guys use this config, and several other unsponsored outdoor athletes also use this config. All of our Inertia pads easily go down to below freezing with this setup. Most quilts cover the peripheral loft pockets that may see convective heat loss, and it takes a massive amount of movement on the pad to lose warmth from the centralized loft pockets. Below 20 F just use a 3/4 lenght 1/8 inch evazote(with the quilt system). That only adds 2.6 oz. Below zero we strongly recommend a sleeping bag. You get a pad that minimizes sweat back on hot nights but still goes down to 20 easily with a 20 degree quilt.
I realize there has been a huge amount of conjecture here. I support it, and empathize. The loft pockets started out as cutouts, and these cutouts were made under the primary volition of weight savings. The realization of their warmth was not without a huge amount of surprise and excitement. It seems intuitively accurate that the loft pockets would not capture heat without insulation, but after many testing nights TRYING to get cold, I can only say that the real world use verdict is in: We have yet to have someone report that they were too cold on a properly functioning X Frame, XL, or X lite above 10 Fahrenheit (with a sleeping bag or quilt rated to the conditions). We have scoured the world for a review of someone saying they had frozen, or packed up early, or had a suffer night. The only negatives are if someone does not fit the strike zone dimensions and has a body part come in direct contact with the cold ground. In fact, if someone has an experience that they did get cold on an Inertia pad we want to hear all about it...we look at negative feedback as the opportunity to make our products better.
In August we MIGHT just have a camping pad coming out that combines the comfort and strike profile of the Static V and the versatility of loft pockets...at 21 inches wide...with a built in 4 inch pillow...in a 11 oz full size pad....Maybe ;)
Sorry again for having the wrong specs up on the X Wave,