Unverified82% confidenceDecision RuleTime unknown

U型开口应偏窄（下巴处开口≤6cm），开口过大头部会前倾无法固定；侧睡人群应选前高后低、下巴支撑更厚的偏U闭合款

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Unverified侧睡为主的人应选侧面加高（侧翼厚度≥12cm）的偏方形颈枕，标准U型颈枕侧面太薄，靠窗侧睡时头部会大幅下垂82% similar UnverifiedU型枕开口处应贴合下巴前侧，两侧填充物高度需在8-12cm之间，才能有效防止睡姿时头部侧倒超过30度导致落枕79% similar Unverified枕高应匹配肩宽：侧睡为主者选枕臂厚度10-12cm填补肩颈空隙，仰睡者选8-10cm；U型枕两侧过厚会顶头，过薄则无支撑78% similar

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