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多数口袋车标称适用6个月至3-4岁、承重≤22-25kg，但实际坐深偏浅，宝宝身高超过100cm或体重超20kg后腿部会顶到脚踏、坐姿局促，大月龄娃选购前应核对坐垫深度

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Unverified承重上限需≥20kg且面板长度≥55cm，否则宝宝4-6月龄长高后腿脚超出托盘，称重时受力不均导致读数漂移84% similar Unverified选购尺码建议比当前身高大一码（约留5-8cm成长空间），袖口/裤脚可翻折：连体衣穿着周期长，宝宝月增长可达2-3cm，过紧限制腿部蹬踏发育84% similar Unverified承重标注需覆盖实际使用月龄：包裹巾多标至9kg，软结构背带主流承重15-20kg（可用至约3岁），选购时用宝宝当前体重+预计使用周期反推所需承重上限82% similar Unverified承重适配看坐垫宽度而非仅看标称公斤数：宝宝坐宽应从一侧膝窝贴合到另一侧膝窝，坐垫过窄会导致腿悬空，标称承重20kg但坐宽不可调的背带不适合大月龄宝宝82% similar Unverified婴儿体重秤最大承重建议选20kg以上机型，可覆盖0-2岁使用；若想用到3岁以上需选带坐姿/站立托盘且承重25-30kg的二合一机型82% similar

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