The material feels durable, and I really like the reflective exterior for hot, sunny weather. They install from inside the van without having to open the doors, so you’re not messing with the door seal every time you put them up. I like the snaps vs velcro as it's more secure and less prone to wear.
It can take a couple tries to get the magnets lined up just right, but it’s easy enough and once they’re in place they hold really well. The horizontal folds are a big improvement over another set I tried with vertical folds. With only a few fold lines, these are more rigid, stay in place better, and let in far less light around the edges. They’re not a 100% perfect blackout seal, but they’re extremely close.
The horizontal design also makes it easy to fold the top down partway if you want some airflow. I believe the instructions say not to flip them around with the black side facing out, but I tried switching sides and it worked well enough for me.