Ok, so these looks like lungs but hopefully will help provide decent lumbar support for those who don't have great office chairs.
Not as cheap as other foam type back support but the design of these ones are quite different.
Had been keeping an eye out for these to go on special and now it has.
Height adjustable for customised lumbar support
Independent springs conform to fit your body shape and articulate with your posture
Ventilated supports keep the back cool and dry
Easily remove fabric cover to machine wash when needed
Thanks Peon! Been looking for something like this for my sore back. The reviews look good too.