The Cobi Minimaxx Bariatric Self-Propelled Wheelchair folds up easily and is easy to bring along. The folding system is very easy to activate and gives at the same time great support to the seat. The design of the folding system makes the chair rigid – when unfolded the chair is also much more stable than normal foldable chairs. STW (Stiffness To Weight) was our goal. We used very light tubing technology as used on high-end MTB and road bikes. This Minimaxx only weighs approx. 9% of its weight capacity and still provides a smooth drive thanks to the rigid folding system and light tubing. Available in 22 inch, 24 inch, 26 inch and 28 inch sizes.