arm rests

can anyone recommend a good adjustable (height and pad) arm rest? looking around online and I find it rare to actually find one for sale that has any sort of detailed description of it at all. preferably, one that can collapse & travels well.

http://www.arm-rest.com/,a lil pricy and not too small but it folds for travelling and overall a solid product

Have a look on www.stickywilsonstands.com