The coated Knit gloves are a heavyweight glove (nitrile over a fabric) and not at all needed for darkroom work, the regular are like latex surgical gloves, only nitrile, which is claimed to be more resistant to chemicals than latex, and also some people are allergic to latex. The gauntlet type have a bit of a sleeve that covers part of your forearm. For normal darkroom activity the regular gloves are fine. I use Kimberly Clark nitrile gloves because they are not talc coated, as the last thing I need is more dust in my darkroom. I bought a box of the Harbor Frieght gloves and they turned out to be talc coated. To use them up, I put them in the washroom, and after donning them, would wash the talc off like I was washing mt hands. PIA