Adjective : adjustable seat belts.    From Dictionary.com. 

The seats are narrow and too flat and the steering wheel roughly the size of that found on an ocean-going yacht (and unadjustable).    From Wordnik.com.  [In Which Dungeekin is Jeremy Clarkson. . .] Reference

Deena was too superior a woman not to be ashamed of such thoughts, but the repression of her married life had developed a morbid sensitiveness, and she was always trying to adjust the unadjustable -- Simeon's small economies to her own ideas of personal dignity; she hardly realized how much the desire to live fittingly in their position had to do with her wish to earn an income.    From Wordnik.com.  [Ainslee's, Vol. 15, No. 5, June 1905] Reference

An illusion for remember their complex unadjustable eye.    From Wordnik.com.  [Ulysses] Reference

Now they took all of them out and give you a machine thats improperly tuned and is unadjustable right from the factory.    From Wordnik.com.  [CR4 - Recent Forum Threads and Blog Entries] Reference

The wastegate was recently replaced because it had slack that was unadjustable, put in a new wastegate and bracket and it is working perfect.    From Wordnik.com.  [Vortex Media Group] Reference

I snagged bike No. 3, whose rickety frame, unadjustable, too-low seat and clunky basket in front did not make it exactly Tour de France worthy.    From Wordnik.com.  [NYT > Home Page] Reference

I am getting charge unadjustable fees, requested payment history and company refused to provide such information and refused to remove late fees charge on purpose.    From Wordnik.com. Reference

Using just the Wii remote with no nunchuk, you move about in third-person mode, but with the unadjustable camera, auto-targeting and a few guided pathways that help make the mandatory D-pad movement more bearable.    From Wordnik.com.  [The Daily Campus RSS] Reference

Years afterward, when he went back to St. Regis ', he seemed to have forgotten the successes of sixth-form year, and to be able to picture himself only as the unadjustable boy who had hurried down corridors, jeered at by his rabid contemporaries mad with common sense.    From Wordnik.com.  [This Side of Paradise] Reference

North-North-West, which was too shy a wind for us with our unadjustable substitute for a sail; and with the knowledge that unless the schooner happened to be bound in our direction we should miss her, and all our efforts would be thrown away, I dropped insensible in the cockpit and so remained for a full hour or more, despite the efforts of the others to revive me.    From Wordnik.com.  [The First Mate The Story of a Strange Cruise] Reference

Years afterward, when he went back to St. Regis’, he seemed to have forgotten the successes of sixth-form year, and to be able to picture himself only as the unadjustable boy who had hurried down corridors, jeered at by his rabid contemporaries mad with common sense.    From Wordnik.com.  [This Side of Paradise] Reference

Detective "Peter Greenberg, the biggest air passenger pet peeves have nothing to do with creature comforts, like cramped or unadjustable seats.    From Wordnik.com.  [KUSA-TV -] Reference

His unadjustable unreaching eyes.    From Wordnik.com.  [Georgian Poetry 1911-12] Reference