Unless it is used on a surface that does not slip, e.g. a carpet, then it is almost unusable as it either slips or damages the floor (in our case wood)

Bad construction after intensive use, the bicycle axle broke, which is held by the regulator that adjusts the speed for slower or faster, and something else, it is almost impossible to hold it in place while pedaling because it tends to lean on its own and you have to have it on a surface that has some resistance, for example a carpet, gym mat, etc. For me, get something else, it's a waste of money

When the user is seated, it does not have the necessary resistance and folds. If both sides are stabilized, then under pressure the plastic leg, which is light, folds. Generally, it cannot be used by individuals with mobility issues or significant weight. A solution would be to have good suction cups on the legs and be able to "stick" to the floor. Otherwise, you chase it around the room. Therefore, the choice for a person with mild mobility issues - Parkinson's - instability is not good.