Nice lightweight gaiters
I had worn out a pair of high gaiters a couple of seasons ago and started using these low gaiters. They are super lightweight and are sufficient for summer climbing when you are not post-holing all the time. They are excellent for lightweight mountaineering.
They are not gore-tex but I never had problem with their water-proof-ness. I use them on glaciers all the time. As long as the boots are water proof, the gaiters are not a problem. If the boots are not water proof, the gaiters are the least of your concern.