Urban Elementz. Urban Elementz and R&S Designs combined forces in 2018.
You can see how big the design board is in comparison to my hand. This design is called Airborne. Each board is 10" x 18". It is a two-board set giving me 36" of design board for one set. I'm not sure why they sell them in sets. I only purchased two sets. I have to "frog hop" one board to make it to the end of this quilt. (I'm not a huge fan of that, but I couldn't see spending another $62.95 plus shipping to get the extra five inches that I needed.
I like the design so far. It flows easily (except for having to move the board every row...)