Qref multi-page checklists are a comprehensive, user-friendly resource. Ideal for students and pilots who appreciate a complete, thorough checklist. Information is organized into standardized sections, and each section is tabbed in sturdy 1/4" (60mm) side tabs, making it easy to navigate to the exact procedure you're after. Pages are synthetic paper with a non-glare, matte finish that is tearproof, waterproof, and virtually indestructible. Mark and erase on it with a standard pencil. Checklists are printed in magazine-quality full color throughout and are securely bound with a crush-proof binding system that prevents pages from coming loose and allows the pilot to flip through and lay flat the desired page.