Sturdy and fits well
I got the "L" box for my Dalmatian in a Skoda Octavia, model year 2026. The box fits in easily and there's plenty of space on all sides. I was able to assemble it on my own with the instructions. There are no sharp edges, the box feels very sturdy, but it's a bit heavy. The mat is good and non-slip. However, what bothers me is that the box rattles a lot. That's because the walls are just slotted or pushed into rails and aren't fixed any further.