Unless you have a backpack full of duct tape, you'll need some strong material to fabricate a splint for arms or legs that need support. From sticks and branches, to rigid bark strips, there's rarely a shortage of stiff splinting material in the wild. But strong lashing material can be hard to come by. To do a proper splinting job, you'll need to create padding around the area to be splinted, add the stiffening supports, and tie the cord securely. The cord of a Survival Strap can be unraveled to give you 15 to 20 feet of 550 cord, which should be enough to get the job done.