RFID Silicone Wristband is composed of FDA level silicone material and RFID tag. You can test and find difference between low quality silicone and our silicone material. non-toxic ,no irritation smelling and do not stick the sweat will depend on good or low quality when start to produce wristband. Zhixin RFID Tag Co,Ltd can offer you different frequency RFID silicone such as 13.56mhz, 125khz and 860-960mhz. color printing and numbering ,laser engrave are available. We also consider more for you in function when you are working with us, more newly types please contact us sooner.