Rain gaiters are amongst the simplest and humblest of all outdoor gear, but also the most useful. It's amazing how much of a difference a basic gaiter can make. Even if it's not raining it's always worth popping them in your pack before you set off on a hike. Otherwise, all it takes is walking through a field of wet grass and your pants legs will be soaked. The water will wick up and wet your socks and then make its way down into your boots. Yuck. A pair of lightweight ankle gaiters will stop that happening and prevent burrs, brambles, and grass seeds from hitching a ride on your socks too.