You could try either, it depends what sort of curl you want to achieve. The short and narrow will give you a much tighter spiral, whereas the long and wide will give you a slightly looser spiral curl. You could always buy a Starter Pack in each size (and don’t forget to order your Styling Hook separately!) to see which curl you prefer before investing in a Styling Kit. Do remember to apply them to damp hair and have a look at some of the demo videos and tutorials on our blog to help you master the art of application! Have fun and let us know how you get on.