These systems are recent developments and are slowly picking up pace, but Indian customers have not warmed up to these systems .
As the name suggests, it is a tube based system, where tubes are joined together to form a frame base. This frame is covered with a cloth print just like a Pillow cover is used. The cloth cover is zipped on.
Cloth print is sublimation print, either printed direct on media or a transfer print.
These systems are sold as light weight systems but they are not as light weight as made out to be.
Graphic above shows how to assemble basic unit and system is used in same way.
Now compare this to Velcro Popup system which is very easy to carry and lighter frame , only draw back being it's straight shape.
Compact Velcro popup frame.