The advent of the Ipad transformed the Pilot's administrative work in the cockpit. As a PPL who flies both the Cessna 172 and Diamond DA20 single engine aircraft, tools like ForeFlight on the Ipad make the experience a vey different one. A kneeboard to secure the Ipad is an important accessory. The Kneeboard needs to both secure the expensive and info laden Ipad from flopping around and it needs to enable the use of other tools There are still a number of tasks that require the pilot to write down numbers, headings, codes.. So the ability to use both in very limited real estate is important. This kneeboard provides a snug, secure home for the Ipad. But it also incorporates a solid writing surface with a place for your pen. There are others on the market that do this. What makes this kneeboard unique is that the hinge for the writing surface is on the right side. All others have the hinge on the left side. in an airplane that uses a Yolk, there isn't much difference in a right or left side hinge. However If you are flying and airplane that uses a centre mount Joystick like the the DA20, the left side hinge will interfere with the joystick. This is the only kneeboard on the market that I've seen that hinges this way. So the reason I bought this was the design.. Smile Design4Pilots.. But that aside, this is also a very well made, quality item that is well worth the money when compared to what else is on the market.