... times specification:20mm wide*30cm long SGS/ROHS elastic book strap/book strap Features:1)Material:ployester & rubber.2 ... manufacturing all kinds of nylon celcro tie, hook&loop,elastic velcro, velcro tape,velcro straps,self- adhensive velcro ... , veclro cable ties,book strap, wrist band,velcro ski strap,ski band, ... time if you are free. velcro elastic book strap