OUTDOOR RESEARCH Sparkplug Gaiters These are gaiters for trail running. Size: L/XL They are thin and light, so they don't take up much space and are easy to use. They are the type that is fixed by attaching the included Velcro tape (with double-sided tape) to the heel side of the shoes, but since they are used items, the included tape is not available. You will need to attach Velcro tape yourself.