Unverified85% confidenceTradeoffTime unknown
头层牛皮（full grain / top grain）耐用透气但价格高，二层皮（split leather）表面为PU涂层，一两年后易出现开裂脱皮，购买时看横截面纤维密度可辨别
1
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85%
Confidence
Long-term
Relevance
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