Unverified80% confidenceDecision RuleTime unknown

护肘尺码应按上臂周长选择：S码适合上臂围14-18cm（3-6岁），M码18-22cm（6-9岁），L码22-26cm（9-12岁），弹性带需能拉伸至周长的1.3倍以上才不勒

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儿童护肘category

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Unverified护腕尺码按腕围选择而非手掌大小，成人常见分S/M/L对应腕围约14-16/16-18/18-20cm，绑带式因可调节尺码适用范围更宽87% similar Unverified腕围适配范围为13.5-21.5cm，腕围偏粗的用户（如成年男性腕围超过21.5cm）无法使用，购买前需实测腕围86% similar

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