1.100% pure silicone 2.OEM ,logo customize 3.Different colors are available 4. ... Factory best price!! 1.made of 100% food grade silicone , non-toxic,odorless2.flexible ,collapsible,easy to store,space safe3 ... to -40Centigrade,heat resistant to 230Centigrade8CE,LFGB,Rohs certification stardard clear silicone printed Glasses bag