Unverified80% confidenceTradeoffTime unknown
软硬度权衡：软质发泡坐垫短时舒适但久坐易变形塌陷、藏污难清洁、易滋生细菌；硬质PP坐垫略硌但耐用、可整体水洗消毒。儿童训练用建议选中等硬度带薄硅胶软层的复合款
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80%
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Long-term
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