Unverified83% confidenceDecision RuleTime unknown
选购时看头围调节范围：0-2岁婴儿头围约42-52cm，耳罩头带可调范围应能覆盖此区间且松开状态仍能贴合，标称'新生儿-3岁'但最小档>46cm的产品对小月龄不适用
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83%
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Long-term
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Unverified婴幼儿套头衫领口周长应≥宝宝头围+2cm，0-6个月宝宝头围约38-44cm，对应领口拉伸后开口需≥46cm，否则穿脱时易剐蹭耳朵和鼻子引发抗拒85% similarUnverified头围尺码不能只看年龄段，需实测宝宝头围：多数学步帽调节范围为42-52cm，购买时应确保宝宝当前头围处于可调节区间的中段，留出生长余量85% similarUnverified购买前测量宝宝头围，选带魔术贴或松紧可调的尺码，覆盖±3cm调节范围可用更久；宝宝头围6-18月约增长3-4cm85% similarUnverified婴儿头围参考：新生儿约34cm，6月龄约42-44cm，1岁约46-48cm；选购时按当前头围+2cm并选带调节的款式，可覆盖3-4个月生长84% similarUnverified选购前需实测宝宝头围，10-18个月头围多在44-48cm，护头帽应带可调节魔术贴或松紧带，预留2cm生长空间，头围超出档位会压迫或滑脱失去防护作用83% similar
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