Rating: 5 / 5
I own the 120cm version, but aside from the dimensions and weight, it is identical.
This pad is not remarkable on its own, but as part of the Montbell sleep system, it is.
The toggles mate with the MB pillow toggles to keep the pillow in position. Similar toggles at the other end can mate with a MB extension pad, or any other modified pad, to bring the total length to what you need, 180cm for me. Securing this all together allowed me to sleep through the night in a tent, for the first time ever.
The foam is solid, not waffle cut like some competitors. Since foam has a higher R value than air, This will result in a more insulating pad. (given the same thickness) I slept warmly on packed snow with only this pad, a 1/8" open cell foam sheet, and the silnylon tent floor.
Combined with the MB pillow, this is the lightest inflatable 150cm setup I can find in my research on the internet (at the time of this review).
It has an integral strap which holds it in the rolled up position; thus saving the weight of a stuff sack.(which is included along with a repair kit)