The products is made of three layers glass.The two layers glass of outward is tempered glass .The middle layer is composed of art stained glass.Art elements and glasses are perfectly combined by those amazing manual techniques. Product feature: 1.Heat insulation&sound insulation. 2.It appears granules of obtuse angle when Broken, not like to be hurt. -high endurance against impacting and bending. -good resistance to heat impact. 3.Bring your room look brighter and artistic. Package would be used wooden case ( 35 sq.M./case)