... strap,Functional book strap,Velcro strap Self-gripping, infinitely adjustable and reusable size:20*150MM,20*180MM.. Product name:Nylon book strap,Functional book strap,Velcro strap ... 280mm,30*300mm...5) Colors: Red, Orange, Blue, Green, White, Black, Gray, Brown etc. Any color and size, logo can be ... dye, conform to the European environmental protection standards. Nylon Book Strap with Plastic Buckle