As some others have said, I too always used a sponge to clean my car, that was until i saw reviews of this product (mainly the comparison Auto Express did between several of them) which clearly showed this as the top one to go for.
First thing to say is that it's pot luck as to which colour you get sent, i got the yellow one which is better than i thought because of the light colour all the dirt shows on the mitt. You're whole hand fits into the glove and because of the tight elasticated band around your wrist there is NO RISK of it coming off by accident! Please note that the interior is not waterproofed so your hand will get wet! This mitt is called a 2 in 1 because it has two different sides, 1 with the microfiber noodles which is best used on bodywork to remove most of the grime and bugs... and the other side is like a mesh which gets the rest of the hard baked on bugs off, the mesh is also best used on glass to get rid of those smears.
The results of using this mitt is my car looks spotless although to be fair i do polish and wax so bugs and grime is easier to remove although the mesh side does get rid of any bug remains!
PROS: Well made, tight band around the wrist ensures it stays on, soaks up soapy water like a sponge, removes more muck and grime than a sponge, softer on bodywork than a sponge and reduces the chances of swirl marks occurring, well priced and it's machine washable!
CONS: I have yet to find any!
VERDICT: Glad i got this, it is far easier to clean my car with and removes twice the amount of dirt without the worry that it's going to move dirt and grime around the way a sponge does. Buy it, Try it and i guarantee you'll be impressed with the results!