Of course, it always depends on one's own Kötpergewicht and the seat angle to (rather lying forward or sitting upright).
I sit erher vertical with slight prevention at about 93kg, with backpack fast times 120kg (it should be noted, because then, of course, changes the spring action).
The angle of the seat itself can also be easily adjusted and almost infinitely.
The quality is sturdy and neat. Only a protection for the main bar (Chrome Innenstenge) I would have liked, so in addition, the system is protected against dirt.
But complain of high Nievea as the main rod to the sleeve with a sealing ring sealed the dirt is supposed to prevent.
So for the price TOP! Also have the same facilities for the wheel to my girlfriend.