Hidrobrico
recensioner:

per ora l'ho solo testato una notte ma devo dire che ha un ottimo isolamento e sembra di buona fattura considerando il prezzo quasi dimezzato rispetto ai più famosi

Over and falsely advertised (so typical chinese). 10% heavier and 50% lower R-value than specified. R-value is over-ambitious! It only has a layer of insulation on the bottom (nothing suspended), so any expert could easily tell just by looking at it that there's no way it can be over R5, (and if fact isn't, in my initial experience - used it at 3-degrees C, and felt cold - in a 0-degree sleeping bag. Maybe it'd be bearable with a -15 bag, but it should be the other way around - get good ground insulation, so you can save weight/volume on a lighter sleeping-bag). Only got it on sale, and for $70 I guess it's a decent summer mat (though you can find others for $20-30 on Amazon/Aliexpress), BUT NEEDS to come with an inflation-sack (their pumps are useless - got the Max 3 and couldn't inflate it enough).