That is an extremely light weight for a full length mat, it's on a par with my short Multimat Superlite.
Does it genuinely insulate you from cold ground? Although the blurb says "The air gap between the user and the floor is about 6cm or 2.2in which provides warmth and comfort from the floor", my understanding is that the air in an inflatable mattress circulates, bringing the colder air up towards you.
The reviews get a fail on Fakespot but they pass on ReviewMeta.
On the Amazon link you provided it says Currently unavailable, so you're going to have to do some searching if you want one.