The yellow mat in those drawings is the standard 20"x72" L type.
well , you are weird.
"Besides, I like having my hands free while walking so I can easily pick my nose, scratch myself, and flip off children on the trail.'
If you learned to use poles correctly, you would have your hand through the straps therefore would be able to still pick your nose and scratch yourself whilst walking with them .
If you really have problems visualising this, I'll do a You Tube clip for you.
As for flipping children , I find that the shoulder bump is more effective and least expected.
It all boils down to using the proper technique.
And don't come back to me in a few years complaining about bad knees, I have no sympathy for that whatsoever.