Unverified50% confidenceDecision RuleTime unknown

选购时预留空间控制在0.5-1cm（约一指），一脚蹬鞋因无鞋带调节余量，预留过大（＞1.5cm）会导致跑动时脱落，过小则挤脚，比系带鞋更需精准

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Unverified内增高单只鞋垫超过5cm时脚会明显前滑，长期穿易导致跖骨疼痛和拇外翻加重；日常内增高幅度建议控制在3-4cm以内，超过5cm优先选外部厚底方案81% similar Unverified建议购买时比日常脚长尺码预留约0.5-1cm，弹力口较紧的设计在穿着时余量不足会夹脚81% similar

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