Wim Smets + 8000m | Mount EverestAntwerp5/528-3-2015I did experience the effect of the height tent during the preparation. Although other factors also play a role, it seemed to me that I really digested acclimatization very well. But the earthquake prevented me from taking the ultimate test (climbing Makalu without oxygen). That will be for next time. I am very satisfied with the service I received from you. Appointments were honored, the explanation was top notch, and the height tent worked as described.