Review (4/5): This does the job!
This is really quite a clever device. The thing that makes it different from all the others is the flip cap that covers the sponge. I need to apply lotion to my back twice a day, so it would be a pain if I had to rinse the sponge every time I used it and hope it would dry in time for the next use, or try to find a safe place to leave a sloppy, unprotected sponge until the next time I need it. Additionally, the sponges are washable (I washed mine by hand), therefore reusable.
Another plus is that it comes with an additional sponge and they switch out easily, held on by velcro.
The other feature was the rotating handle. A stiff twist and the handle is twice as long, able to reach those spots my hands couldn't possibly reach. If I had any complaints, this twisting handle would be the source. At certain angles, under certain pressure, the handle will twist and start to collapse, which is annoying, but that alone is not enough to send me looking for a replacement. The Bakslap is a keeper.