Unverified78% confidenceTradeoffTime unknown
越柔软的包边（低密度发泡）缓冲越好但越不耐咬易被撕碎，越耐咬的硬质硅胶缓冲性反而下降；学步撞击防护和防啃咬无法同时最优，长牙期优先选耐咬硅胶
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