Material:100%polyester,black and white color,have SGS,ROHS certificate,good quality best prices Details:1) Material:polyester2) Normal sizes: 16mm, 20mm, 25mm, 30mm, 40mm, 50mm. and 100mm.3) Color: white/black4)high quality and excellent service 5)Packing: 25meter/roll or 25 yard/roll polyester quality velcro tape