What I love is that they have all different patterns with hilarious names. The pair I chose is called Giardia (lol). Hopefully I'm not tempting fate wearing them.
They are not waterproof, but are instead designed to keep debris out of your shoes. Leaves, pebbles, and dirt can't cross the Dirty Girl gaiter.
Here I am on the trails in Douthat State Park:
Anyhow, if you're a runner, and do a lot of trails, they are well worth the investment.
I did a 13 miler yesterday (so humid out!) so hopefully this upcoming half marathon will be a little easier than the last one. I'm slightly more prepared for the mileage :-)