While new to me, the VisibleDust SL Swab has been around for a couple of years. I didn’t know about them until just recently, when I needed to replenish my supply. I’ve used VisibleDust since the beginning cause they have never let me down. I was surprised to see the new design and really quite intrigued (even with them costing 150% more than the regular ones). The SL Swabs have an angle to the edge for more even swipes, and wedge edge does much better in the corners of the sensor. The other biggie is the bigger handle. You can read all the specs of the “new” SL here, what you can’t read about is a small but important perk to the wider handles. As I get older, arthritis has started to wang at my thumb. That wider “stick” sure feels a whole lot better in my hand than the originals. So, I can get cleaner, faster, and with a bit less discomfort. That’s why when I used them for the first time, I said out loud, VisibleDust SL Swab, dang!