Unverified80% confidenceDecision RuleTime unknown
尺寸按腿围而非月龄选：6-10月宝宝腿围约14-18cm选S码，10-15月约18-22cm选M码，护膝周长应比腿围小1-2cm形成微弹力，太松会掉太紧勒血液
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80%
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Long-term
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Unverified尺码按腿围而非年龄选：大腿最粗处周长通常爬行期宝宝在16-22cm，护膝拉伸后应比腿围大2-3cm以内，过松防滑失效、过紧勒腿87% similarUnverified选鞋码留足内长应为『脚长+10~12mm』，超过15mm会导致踢脚、绊倒，少于8mm则3个月内必顶脚。婴幼儿脚每2-3个月长约7-9mm，建议按脚长实测而非年龄段选81% similarUnverified腰围适用范围随月龄递进：0-6月约35-45cm、6-12月约42-50cm、1-3岁约48-55cm；建议按当前腰围购买而非买大，过大会移位失去护肚作用81% similarUnverified护具尺寸应按肘围/膝围周长选择而非年龄：护膝内径周长比肢体周长小1-2cm为宜，太松滑落无防护，太紧影响血液循环。3-6岁通常膝围18-22cm对应S码，7-10岁对应M码，需实测80% similarUnverified按大腿/膝下围度选码而非仅看年龄标注，同龄儿童腿围差异可达4cm以上，购买时应测量膝盖下方2cm处周长对照尺码表77% similar
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