... . SM-SPB 003Material100% silicone,negative ionCertificateFDA;SGSDesignOEM&ODM,custom-made design color,size,logoLogo VersionPrinted,embossed,debossedBracelet ... is availableEnergyAbout1800-2000 ionsSample time3 daysPacking1 pcs per box/tube/opp bag;accept any customized packageQTY/CTN400 ... ,improve the quality of sleep Custom power band bracelets ishot sell design,OEM&ODM are highly welcome,good choice ...