So, I just got back from a week's snowboarding in Les Arcs. The snow was fantastic; thanks for asking. And the fact that the package included lessons with an ESF instructor/guide meant that I got to do way more off-piste (powder and trees) boarding than I would otherwise have done.

The problem is this: my boots (Northwave Concept) are getting a bit old, and the laces on the inner liners no longer stay done up properly. On the piste, this isn't much of a problem, but it's starting to cause issues off-piste, particularly when there's not much time or opportunity to pause to tighten them.

So, the question: rather than replace the entire boot, or even the inner linings, how do I go about replacing the plastic clips that are supposed to keep the laces clamped? What are those bits even called?

I'd like to avoid dropping £200 on some new boots, when all I need is a couple of quids worth of plastic clips.