Como dizer "Esteirinha para Sofá" em inglês

My suggestion:

Sofa armrest holder.


Bye!

Sofa tray table is one option (they are indeed flexible wooden sofa tray tables ) that fit over a rectangular armrest on a sofa...)
http://www.sothatscool.com/2013/10/sofa-tray-table.php

Armchair roll-up tray
http://www.juliajones.co.uk/shop/arm-ch ... l-up-tray/
This site describe it as a slatted wooden matts as well, they could be described as such, but there are other kinds of slatted wooden maths. For example: a wooden bath matted (slatted here, these flexible ones) at http://argos.scene7.com/is/image/Argos/ ... 12&hei=312
http://www.remodelista.com/posts/10-eas ... -bath-mats

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Tableware:

Slatted wood coaster
http://www.beales.co.uk/content/images/ ... -four.jpeg


Slatted wood placemats
http://www.creative-tops.com/images/pro ... _732_2.jpg
http://www.creative-tops.com/brands/p55 ... rals/i518/

And armrest table (these guys can be quite inventive...with descriptions)
https://s-media-cache-ak0.pinimg.com/73 ... 7f9966.jpg