... silicone products like silicone bowl lid ,silicone glove mitts,silicone cup covers,silicone wristband,silicone watch,silicone mobile phone case,silicone ... any level of glass,ceramic or steel cup,with good sealing performance and keep the taste.Cup cover not only make use of ... the air pressure to lift the whole cup,but also prevent dust falling,simple design,easy to use ...