These are not necessary for most Strolls but are easy to justify if you do lots of walking. They are designed to keep rain, grass seeds, sand, mud, leeches and other unwanted items out of the top of your boots. They come in a full range of sizes from huge mountaineering styles through to short, lightweight ones. Most of them wrap over the boot laces, around the tops of boots and upwards over the lower part of your legs. Sensible, practical gaiters should have some stiffness, so they will sit upright around the lower part of your legs, and not slip down. Also, they should go on and off without needing to remove your boots. Gaiters also provide useful leg & sock protection whenever there are scratchy plants over the track or grasses full of seeds.