works great. Turn it on. Wait a few minutes. It auto calibrates...pretty accurate.
Great value and worked!
Great value for money! love it
I checked this site in September in the Tver region in hiking conditions... When folded, compact, by weight as a good self-inflating. Going simply and quickly, quite qualitatively done. Sleep in general better than on self-inflating "on the ground": do not care about the presence of roots, branches and cones under the bottom of the tent. You're lying like a hammock. On the clamshell I put foam for warmth, it was even hot at night. Now pro minuses: If you do not lie down neatly, the legs can turn out :-), at the same time you can quietly steal, but dont eat up-down;-)
Good thing. Tired of gluing the inflatable mattress. With the clamshell is much better. With a weight of 85 kg. It's doing great.