Presumably the developers at Nigrin (and also Sonax, ...) have developed these sponges / wash gloves for the success of the textile car cleaning, the fluffy fibers (-> "Rastas") are probably these washes / car washes modeled.
At this point I can only make the comparison with a conventional sponge: The wash mitt is very absorbent, the microfibre "Rastas" take the dirt from all surfaces very well and hold it firmly in the entire volume. When washing the glove in the wash water, the dirt can be removed again largely out of the glove, there remain only small amounts.
Compared to my previous foam sponges - the first did not want to take the dirt well and have later released him only by strong cleaning - of washing glove is really great. The sponges are now used only for the windows and wheels.
The insect-net (the second page) replaces the scratchy insect sponges that you always used to be afraid to paint.
One should in the application merely note that the soaked Waschhandschuh would slip despite tapes of his hand, so the wrist as far as possible down.
After the car wash, I was surprised, when compared to the sponges significantly more debris had landed in the bucket and washing the glove was comparatively easy. If this time is not the case, can the glove with the washing machine clean (40 ° wash - without fabric softener!). No matter how you get the glove itself clean after wring it is hanging - Rastas hanging down - while the scrubbing glove already claimed then some space.
Conclusion: I think the Nigrin Car Wash Mitt is the basis of a careful and thorough cleaning drying (the sponges previously used are now used only for disc or rim cleaning). Combined with a good car shampoo or "Wash and Wax" (each Nigrin or Sonax) should be achieved good results, I for one am happy with my results.