Hi Caroline,

If you look at the specification of the Mammoth mattress you will note that this is primarily a foam mattress with pocket springs, whereas the Artisan Naturals is a naturally upholstered pocket sprung mattress and as such, there is no comparison in terms of construction or performance.

I am not able to provide an opinion as to the performance and construction of the Mammoth mattress due to the limited detailing available.

Kind Regards Gary