Hi NRJ,
Thanks for the picture and the specs.
If these specs are correct it would certainly be a very durable mattress although it’s not possible to put a specific number of years on a mattress because the useful life of a mattress is relative to each person and the affect that foam softening will have on their comfort and alignment (see post #4 here and the posts it links to)
I have no knowledge of the European market in terms of pricing so in terms of cost or material value I really don’t know but if the mattress is a good match for your personal value equation and compares well to other mattresses that would be similar in terms of PPP and durability then it would certainly be worth serious consideration.
Phoenix