Rating: 4 / 5
This is a small light mat with an hourglass-shaped self-inflating compartment supporting hips, spine and shoulders. There is a narrow patch extending beyond the shoulder area, but it is hard to balance your head on it. Furthermore doing so would mean resting your head upon the valve located at the end of it, so it is necessary to add a small piece of clothing under your head. There are thin foam pads sealed between the top and bottom nylon layers between the hip and shoulder compartment, which insulate and cusion the elbows a bit; for some reason there are also such pads on either side of the valve piece, which could probably be removed.
It is about 80cm/32" long (94cm/37") with the valve piece, 36-42cm/14"-16.5" wide and mine is just a fraction more than 2cm/0.8" thick at the edges (the manufacturer states 2.5cm/1" - this may be true for the centre of the mat). It weighs about 270g/9.5oz with repair kit and mesh stuffsack which weigh 25g. The stuffsack is 23cm x 12cm diameter (9" x 5" Ø); it is possible to squeeze the mat smaller.
The special shape (and small size) of the self-inflating compartment means that there is practically nowhere for the air to go, except where you are lying. This makes the pad very comfortable, more so than I imagined considering the modest thickness - there is no need for slender people to blow extra air into the pad and moistening the foam to avoid hitting the ground as there might be with thin 50cm/20" wide rectangular pads.
The ripstop nylon feels more durable than the new Therm-a-Rest ProLites with "sticky dots". While I haven't slept on one of those, thus being unable to compare, I find this mat slippery - best to find a level place to sleep.
The foam cut pattern has a wide rim. While very comfortable, looking at the pattern and thickness I would guess it is less warm than the Torsolite, probably loosing to it in terms of performance per weight. This has not been a problem for me for 3-season Scottish use (with a tent and groundsheet below it).