... good effect for anti-radiation, and can effectively eradicate wrist problems.Size:19*2*0.32cmMaterial:100% Silicone+ionColor ... such as the silicone bracelet, silicone watch, silicon wristband, silicone band, silicone keychain, silicone key holder / keyholder, silicone key ring ... , silicone rubber bands, silicone USB Disk Flash band, silicone MP3/MP4 case, silicone strap, pvc key chain ...