4mm thickness For bottle / beer / wine/lunch Glue bottom Great for outdoor activity 1.Can keep cool/warm 8 ... environmental protection foaming rubber to make non-toxic5. Can make any of the customized size and printing ... design6. Available color:Fuchsia,Red,Wine,Burgundy,Yellow,Process Blue,Aqua,Green,Royal,Navy ... ,Cyan,Teal,White,Black,etc...7.Can cooler is used for keeping beverag