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