Unverified75% confidenceTradeoffTime unknown

U型带下颌托设计能给下巴提供支撑，适合坐姿睡觉防止头部前倾，但下颌托对部分人可能顶脖子，介意的慎选

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UnverifiedU型带下颌托设计对靠椅背时的正面点头有支撑，但下颌托可能压迫脖子偏粗或体型偏大者91% similar UnverifiedU型颈枕的开口应朝前佩戴，将下巴托住防止头部前倾，而非常见的开口朝后戴法；开口朝后无法防止低头点头式失重90% similar

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