At the Rehacare fair I had the world’s lightest wheelchair on my knees, the
Panthera-X carbon fiber wheelchair
of the Swedish company
www.Panthera.se
weighs only 2,1 kilo (4,61 lb) (without wheels).
As light as the wheelchair, as heavy is the price for this wheeler Ferrari . 
Further information e.g. www.aktiv-rollstuhl.de
Translator BL
