The Flyboys Pilot Kneeboard is probably the most versatile pilot kneeboard on the market.

Designed by an F-16 pilot, this aviation kneeboard is narrower than typical tri-folds. It features seven eyelets for securing checklists, plastic checklist pages or an in-flight guide. 

Measures 8"x 5.5" x 1"

Clipboard itself measures 8"x 5" 

Check out these features of the FlyBoys IFR/VFR Kneeboard:

Durable 1000 Denier Cordura construction

Clear plastic strap keeps your approach plates secure and visible

Removable flexible plastic clipboard (8 x 5 inches) 

Checklist rings sold separately

Side pockets for flight planning computer, ear plugs

Angled pencil slots

Extra wide Velcro leg strap for comfort

Compatible with military and civilian approach plates so universal eyelet spacing (rings sold separately)

Available in Black, Navy, Tan and Olive Drab Green