More on Amazon.com : http://www.amazon.com/gp/product/B008LZM1CQ?tag=thefatkidin06-20

Texas Instruments TI-85 Advanced Graphing Scientific Calculator

Unique Slant Ring design for smoother page turning
Crystal clear overlay enhances custom inserts on front cover back cover and spine
Back-mounted rings allow pages to lie flat
Wider front and back binder panels fully cover standard dividers and sheet protectors
Two opaque interior pockets for improved organization