Solid construction: a bunch of aluminium profiles welded together.
The underside doesn't really have enough room for a power supply unless you are using Cioks. The middle aluminium profile doesn't have any holes for routing cables through it under the board. You can guide them under the profile because of the rubber feet in the corners, but I wouldn't want any cables between the edge of the L-shaped profile and the ground. The wiring limitations might not be an issue unless you want to cram the maximum amount of pedals on the board, like I did.
The rubber feet are riveted in place so there is no height adjustment for them.
The gig bag is of nice quality, good zipper and handle. There is only something like 8 mm of padding inside the side walls though. My filled up board has some weight to it and some pedals are sticking out a bit over the edges of the board, so I felt I needed a bit more protection that the bag has to offer and ended up getting a hard case.