You've landed yourself a beautiful USMC 1218 with a serrated edge and a gorgeous leather sheath. This leather sheath is arguably the most important accessory for your survival knife, like all sheaths are for the blades they carry and protect. This means that taking care of your sheath is almost as important as taking care of your knife. As one of the most popular sheath materials, leather is, unfortunately, one of the most difficult to maintain, so, we'll be listing some of the best leather sheath care tips to help you keep your leather sheath in tip top shape.