You'll probably see it advertised as camping mats Paul. Same stuff as I have in my obs. Its great!
Lovely and soft on the old knees if you have to kneel down!
I find it's great on the concrete slab I have... it keeps my toes both comfy and warm
, and protects anything I'm clumsy enough to drop. I have dropped a few little screws and things from time to time and have had no problem finding them. The holes make it easier if anything on a concrete slab
... I wouldn't guarantee that's the case if its over a darker timber floor though.
I'm not sure how it would go as an underlay for outdoor carpet
. It might be a bit too soft maybe underneath say chair legs and things. It might cause the carpet to deform around the chair legs or any other concentrated load. But just to walk to stand on I imagine it would be great. If you have a small section of carpet and can get a mat (or a closed cell foam sleeping mat doubled over), I'd suggest a test with a chair
. Without the carpet I find my observing chair depresses maybe 3-5mm into the foam when "fully loaded" but it quickly recovers
.
Al.