... of 100% silicone, eco- friendly, non-toxic, tasteless, 4.High quality material Silicone square mug tray Item No.Silicone square mug ... We have mass production moldFeature1.Made of 100% silicone, eco- friendly, non-toxic, tasteless, top quality material2.Supreme- heatproof ... per customized ,nowadays, we have many existing different style silicone tray, such as square mug tray, chocolate mug tray ...