S Dial is an arch-level controller that stimulates serotonin secrtion from our body.
S Dial spreads pressure applied on the arch, and helps blood circulation.
For feet with low arch, use 0~1 level of S dial, for moderate arch use 2~3 level and level 4~5 for high arch.

• S Dial is an arch-level controller that stimulates serotonin secrtion from our body. This boosts the effect of exercising on our body by 20%.
• S dial controls the arch level of the shoes according to the shape of the foot.
• S dial spreads pressure inserted on the arch, and helps blood circulation.
• For feet with low arch, use 0~1 level of S dial, for moderate arch use 2~3 level and level 4~5 for high arch.
• 99% Waterproof