For a smart look on a proper dress boot, look no further than The Shoe Snob's 120cm flat, waxed boot lace. Being flat, it leaves a much cleaner and more elegant look in comparison to your average round lace.
120cm (48in) in length from end to end. 3mm in width
Traditional waxed cotton (like most dress shoe laces)
Can be steam-ironed flat again once they have lost their shape
Good for up to 9-10 eyelets on traditional dress boot