C-Line's Economy Weight Polypropylene Sheet Protectors are best for maximizing binder capacity. The reduced glare finish aids in visibility of your materials. These sheet protectors are top loading with a reinforced binding edge for long lasting use. The polypropylene material provides archival quality protection. Perfect for use in training manuals and other lengthy documents you store in standard three-ring binders. No hole punching necessary. 100 sheet protectors per box. With over 60 years of experience, C-Line's many product offerings include sheet protectors, name badges and holders, shop ticket holders, media storage products, laminating film, report covers and project folders, photo holders, Memory Book page protectors, office accessories, transparency film and more.