Free light adjustment of the functional product is made available by a mesh part and a fabric part double crossing with each other. Various different colors can be expressed and private life can be protected according to the level of opening/closing of the middle part. High-quality materials are used for the product to prevent deformation and discoloration. Thermal stability and excess moisture tolerance of the material makes the condition of the product maintained semi-permanently. The durable fabric with simplified structure assures long term use without small troubles. By practical adjustment of light, the product goes well with any environment. Light can be adjusted up to personal preference of consumer.