I've been using a couple pairs from Keen. Most of the time I wear the low cut, but in bad weather I'll use the other pair. I find them very comfortable and were well. Like a lot of others, I suffer from lower back pain. So I added a pair of Dr Scholl's inserts for my weight I also have concrete flooring that I have 3' x 5' anti fatigue mats down were I stand the most. I also find going for walks helps a lot with the back pain. It tightens up the abs.
Here's the low cut https://www.keenfootwear.com/p/M-TARGHEE-II-WP.html?dwvar_M-TARGHEE-II-WP_color=1008417&cgid=mens_footwear_shoes
These are the mid-cut https://www.keenfootwear.com/p/M-DURAND-MID-WP.html?dwvar_M-DURAND-MID-WP_color=1011550&cgid=mens_footwear_boots
There not cheap, but I find them worth the money. Nothing is worse than having the lower back spasms
I tried the Jungle Mocs, but they just didn't work with my feet. But the store I went to had a 30% + 20% special event sale, so I walked out of there with 2 pairs of slip on safety shoes & a pair of casual shoes. So thanks @davesatosky for getting me to the shoe store.