Well, shuh!
(Sorry, that last wasn't me...)That is a stoutly built piece of military surplus that one hunkers over when feeling the need to sh1t bullets...
Added benny is that they're completely airtight!
Maybe less a benefit, if not immediately emptied & de-conned...
That is exactly what I was picturing..... I knew I must be mistaken....
In the whitewater rafting community, they call it a "groover" for the creases it leaves on your backside. I have an EcoSafe system that fits in 2 rocket boxes along with the wash-out accessories that let you use an RV dump station
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"Reality is that which, when you stop believing in it, doesn't go away" - Phillip K. Dick