Review (5/5): I Love It!
I love this thing! I've bought other "Korean Washcloths" in the past, all of which turned out to be too fine-woven and flimsy to scrub well. The blue Salux scrubbers I bought are perfect; they have enough "body" not to just bunch up into a skinny rope when I try to scrub my back, and the texture is aggressive enough to feel that they're really doing something.
Besides being thicker than the others I've bought, the Salux is at least 6" longer too.
I don't know whether the different colors mean anything or not; all mine are blue.
The one improvement I could suggest is to mold a soft rubber bead across each end to help
keep it spread out flat while I do my back. (I tried doing that with silicone glue, which seemed to work but was too slippery to hold onto...)
Also, it does shed a few threads from time to time.