Boyt Safari gaiters seem popular with PHs over in Africa. For some time, I wore the gaiters made by Texas Hunt Company(?), but now I own 2 sets of Boyts, which I like much better. MidwayUSA has them, I believe, and for a good price.
Last time I was in Africa, my PH said he was having a hard time finding the Boyts, and his were getting thread-bare, so I bought several pair and gave a set to the PH.
"For every complex problem there is an answer that is clear, simple.....and wrong." H. L. Mencken