I thinks this might also be a good cheap option:
https://www.quadratec.com/products/92034_1000_07.htm
Fits JL, folds, can be locked if you buy additional accessories and is $129.
Just Bought this!
There is $10 coupon in Amazon as well!
Will update how it works once I get it!
https://xpriteusa.com/xprite-black-nitepad-premium-portable-sleeping-pad-cushion-fits-2018-jeep-wrangler-jl/
https://www.amazon.com/Xprite-NitePad-Portable-Sleeping-Wrangler/dp/B07D6W4B6G