1.100% tyvek,ROHS 2.colorful, never fade 3.various size 4,OEM/ ... , advertise for sport, medical, commercial, party. Material:100% eco-friendly tyvek materialCertificate:SGS, RoHS, ISO, SEDEX certificate can be supplied.HS ... .00 KG/CTNG.W. :6.00 KG/CTN factory make tyvek wristbands for your promotion, party and events