Knee Defender

Ordering Information
SKU #: 15-420
Price: $14.95
Availability: In Stock
Quantity:
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Product Description

Let's face it:  given seat size, crowded flights, airport security and everything else these days comfortable air travel is pretty much a lost cause.  The last thing you need is somebody in front of you slamming their seat back into your lap.  Contrary to popular opinion, the space behind the seat between full upright and full recline is basically a shared space; you have as much right to it as the person in front of you.  For larger and taller passengers this space is really important and when somebody reclines into it your comfort is significantly impacted.   Now, however, the unique, patent pending Knee Defender gives you a way to stop surprise reclining so you can at least try to negotiate a reasonable compromise on when and how much recline is acceptable.

If the airlines or the FAA will not protect passengers from being battered, crunched, and immobilized by seats that are too small and aggressive reclining passengers – very real problems according to healthcare professionals, medical studies, government agencies, and even some airlines – then people need options to protect themselves.

Until there is something better – or even just something else – there is Knee Defender.


  • Knee Defender Installation Easy to install - just lower your tray table and install one Knee Defender on each arm of your lowered tray table – at the top of the arm, near where the arm is attached to the table. Each Knee Defender simply straddles one of the tray table's arms. Then, slide both Knee Defenders down the arms of the tray table until they are snug against the seat back in front of you. Your Knee Defenders are now in place. If the person in front of you attempts to recline their seat, the Knee Defenders and not your knees will take the hit.
  • Adjustable - the Knee Defender has multiple notched stops so that it works with most airline tray tables and so you can set the amount that the seat in front of you can recline.*
  • Tough - built from injection molded structural plastic - the same material used in cars and aircraft.
  • Compact - barely the size of a pack of cigarettes.  Stores easily in your carry on bag or briefcase.

Knee DefenderKnee Defender was developed by a tall frequent traveler who got tired of ending up bent into a pretzel because of small seats and inconsiderate passengers in the seat in front of him.  The design took him years to perfect.  No one likes to travel in a cramped coach airline seat but with a Knee Defender you at least have a chance to negotiate on how much recline is mutually agreeable.

Whether you are intent on protecting yourself from being crunched, want to maintain enough leg room to do some in-seat exercises because of health concerns – such as Deep Vein Thrombosis (DVT), sometimes called "economy class syndrome" – or you just want some warning so you can move your notebook computer out of the way before the seat is reclined, Knee Defender works "like a charm."

Knee Defender is adjustable. In general, the closer the two Knee Defenders are to the seatback, the less the seat back will be able to recline. If you need to prevent as much reclining as possible, then you would slide them fully up against the seat back. On the other hand, if there is enough room for the person in front of you to recline partially – safely, without threatening injury to you – the Knee Defenders can often be set slightly away from the seat back to allow some reclining.

Not only are Knee Defenders great for frequent fliers, they make great gifts for those frequent fliers on your shopping list.  Order your Knee Defenders today!!


Important Note: Knee Defenders have proven to be a bit controversial in use. We're pretty much of the, "Your right to recline ends where my knees begin," school of thought but it's not a settled thing.   As with everything, in most cases a little polite negotiation beats confrontation.   And in any case, remember: comply with the flight crew's instructions.  ALWAYS.  Any flight crew member's instructions have the weight of law behind them and you can get yourself tossed off the plane and/or arrested if you don't comply promptly.  If time permits you could discuss it with the flight crew and the passenger in front of you but always in a friendly, cooperative manner and always making it clear that you will comply with the flight crew's decision.  While policies and degree of enforcement vary from airline to airline, under FAA regulations all airlines have the right to limit or prohibit the use of pretty much anything they want on their flights.

*Knee Defenders™, with their specially shaped grooves, were designed to work with a wide variety of seat and tray table designs. However, not every design could be accommodated, especially those used on some commuter planes and even on some jets. For additional information about this and other questions about using Knee Defenders™, check out the Knee Defender FAQ page.

"Knee Defender™" is a Trademark of Right Brain, Ltd.

All prices, specifications and availability information are provided for informational purposes only and are subject to change without notice.
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