... for many times specification:20mm wide*30cm long SGS/ROHS elastic book strap/book strap Features:1)Material:ployester & rubber.2 ... to dye, conform to the European environmental protection standards.width:10mm,12.5mm, 16mm,20mm,25mm,30mm,38mm,50mm,60mm,75mm ... in manufacturing all kinds of nylon celcro tie, hook&loop,elastic velcro, velcro tape,velcro straps,self- adhensive velcro, veclro cable ...