View binder features a unique XtraLife material that will not stick to cover title insert or materials stored inside, including photos, laser prints & photocopies. Material is much stronger than standard vinyl so no seam splitting & hinge tearing. Unique, polyolefin cover material is better for the environment when produced & disposed than vinyl. Nonstick cover offers a clear, nonglare overlay on three-sides for easy customization. Designed to endure extreme temperatures, this binder is cold-crack tested to negative 50 degrees Fahrenheit. Locking Slant-D rings hold 25 percent more letter-size material than standard round rings while GelTab triggers make it comfortable to operate. Back-mounted steel rings provide a clean, professional spine & reduce wear. 4" ring capacity holds 890 sheets. Horizontal pockets on the inside front & back covers hold loose papers. Each pocket holds 40 sheets. Binder also features a sturdy chipboard core & exposed rivets.