头层牛皮

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   The first layer of cowhide

   是上乘的皮革材质

   It's made of the finest leather

   皮革截面是完好紧密的

   The leather section is intact 

  高密度海绵

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   High density sponge

   密度高，回弹性好

   High density, good resilience

   能够长时间保持材料稳定性

   Can maintain material stability for a long time

  俄罗斯进口落叶松实木框架

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  Larch solid wood frame

   木材不易变形开裂，结构稳定

   Wood is not easy to deform and crack

   环保健康结构更牢固耐用，安全无异味

  More robust and durable structure