Leather chaps are worn in the legs slot, most commonly by low-level rangers. Low-levelled player mages also often wear these chaps, since they give a slight defence bonuses without a magic attack penalty.
Players can make this item through the Crafting skill at level 18 from one soft leather, by using a needle on it with a thread in the inventory granting 27 Crafting experience.
They can be bought from Aaron's Archery Appendages in the Ranging Guild.