Back-Up
This is the largest and most comfortable Nada Chair (it has knee cushions and a back pad that are twice as thick as the next-in-line S'PortBacker). It has the most adjustable-length straps, so it is suitable for almost all sizes of customer from "petite" to those with "bigger body" builds. 
(full instructions as to how to "wear" it are of course included). It comes with accessory CushShins to spread the load on the knees and shins. It also comes with accessory Stretch Straps.
This back support can also be helpful for women suffering low back pain during pregnancy.
