sr80
WKR
pretty certain exo has another option for their lumbar pads, i would reach out to @Mark at EXOI just made a new post and then found yours. Just held my SG lumbar on Exo with a 70lb load and liked it much better. May try to find what foam SG is using and buy some
For Exo lumbar. I find the Exo lumbar pad way too soft.