3" Dark Blue Colored Premium-Cloth Book Binding Repair Tape | 15 Yard Roll (BookGuard Brand) This tough and durable tape is a hefty 13-mil thick with 45 lbs. per inch tensile strength Non-reflective vinyl-coated cotton cloth will not crack over time Highly conformable with excellent abrasion resistance Adhesive permanently adheres to even the most difficult surfaces 3" W x 15 yds, 3" core