Aha, I'd been playing on something similar with some foam, combined with a footbed it's great for helping fix pronation, alleviating ankle pressure, and pressure on the outside of my forefoot. A must have if you have a tailors bunion like me!

Craig, you might be able to help... I do have AT ski boots and they have been fitted with a custom insole. Works great on piste and also mostly on fresh powder (uniform consistency). When I ski less consistent powder or crud I get foot pain quite fast and sometimes cramps. It seems as if I cramp up once the underground gets more uneven or difficult. Any ideas on how this could be mitigated?

How do you stop these moving or falling off, when you remove & refit the liners every day?