As a reliable manufacturer of battery heated insoles in China, S-King Insoles represents global reliability and superior quality. As one of S-King Insoles's multiple product series, gel toe spacers series enjoy a relatively high recognition in the market. S-King heel cushion is quite attractive with its design. S-King insoles have to go through more than 1,000,000 times of anti-bending tests. This product is electrically safe. Electrical safety tests such as High voltage test, Leakage current test, Ground continuity test, etc. have proved its electrical safety. S-King PU insoles feature non-toxic and non-flammable functions.
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