... 3)Material:silicone, pass CE,Rohs... 4)N.W:250G New design 109Keys silicone folding keyboardmaterialuse100% silicone made, ECO-friendly,insipidity,avirulentcetificatePASS ... life:10,000,000 timessample times3daysdesignaccording clinet's require to design,add client's logo. SIZE:492*138*6.5MM welcome ...