The rear wheels are massif and have a diameter of 300mm (12″). This the correct chair for users who are not able to propel themselves and haves to be carried by a companion, since it is less bulky than the big wheel one and is a little more narrow , having the same seat width, which facilitates the passage through the doors. It is very manageable and folds easily, which allows its transport in a vehicle. It has adjustable in height, removable and foldable footrests. The armrests are practicable. it also has studs on the back to help overcome obstacles such as curbs.