I know this is an older post, but I wanted to give a review of the Tmat system. I’ve had it for about two weeks now and it seems to work pretty well. So far, I have used it to secure my one gallon Yeti water jug and a cooler. I have placed a tote box along the tailgate to allow me to put groceries and recently, two gallons of paint in it. It works great, but, it only keeps items from sliding around, not from flying out. It doesn’t clamp down on the items, so something light, like an empty tote, may fly away. I plan on putting a larger box back there and maybe a brick in it to keep it in place.Looks pretty nice and no modifications to bed.
https://www.tmat.com/products/tmat-midsize-truck-kit