The chair has to withstand a lot with me, I weigh more than 130 kg. Sitting comfortably, which applies to large (187cm) and small (my daughter, 168 cm tall) has the same. I have disc problems to other chairs, but not with this, the settings can be made so that you get optimum support of the backrest. The seat provides sufficient length for long thigh. Despite my weight groans and moans not the chair.
Strong buy recommendation also suitable for daily, several hours use.