"I already used the height tent (sleep high, train low) twice as preparation for a trekking / ascent up to 6200 meters. As a preparation for trekking and climbing at great heights, a huge advantage (quietly acclimatize at home at your own pace). So no problems in the mountains with headache, dizziness, shortness of breath, no symptoms of altitude sickness. On previous climbs (up to 4200 meters) without the use of the height tent, I did have the above-mentioned symptoms (headache, fatigue, dizziness, etc.). Furthermore: VERY professional, clear agreements and correct delivery. "

"Good. Quick reaction & solution to a malfunction of the altitude generator, clear information about bringing and collecting the altitude tent. Good effect as I reached the summit of Aconcagua as one of the few people in the expedition team. "

"Excellent service and good additional information. I can say that I have walked / climbed enormously well. At a height of 3400m my saturation was 99%, the doctor was surprised. And even at a height of 4300m my saturation was still 90% after a brisk walk. I felt very strong throughout the trip. I think it helped and I reached the top of the Aconcagua. Thank you for your help. "

"I managed to climb the Aconcagua. Last week Saturday 27 February I was at the top. During the entire climb I, partly due to acclimatization through the height tent, had no problems with altitude sickness. Thank you Altitude Dream "

"The climb went very well. On December 29 we were at the top of the Aconcagua at 6962m. Our height tent will have played a major role in this as all other members of our expedition have not reached the top! Thanks for the good service. "

"Material is, as far as I can judge, top quality and is supplied with a very professional explanation of how / what / why. Regarding operational handling: excellent and very transparent organized with good follow-up! In Nepal I myself have been spared 100% from altitude sickness. Our 16-day trek has started at 2800m and had 5410m as the highest point. My husband had some very mild symptoms at 4400m but without impact on the trip. As far as I am concerned, it is worth repeating when a next high-altitude adventure presents itself. "

"The service was good. It may be better if you can also provide those small 1-person tents. Is easier to place and especially if it is the only person sleeping in it. It certainly helped of the 12 participants, we only reached the top of aconcagua with 4. Only had a minor headache. "

"Super service. Very satisfied, quality and as agreed. I have also achieved my goal, although the altitude still bothers me a lot. I am convinced that this is mainly due to my body, which suffers more than usual from the altitude. "

"I did notice an effect. The first night I was not prepared for sleeping in the height tent. When installing it was said that you had to drink a lot and I hadn't done that that day. A dry mouth in the morning. I do not know if this is somewhere on the website otherwise you could state this in advance as a point for improvement. Positive effect: in the Aconcagua base camp (4200 meters) my saturation was pretty good: 88. Of the 11 fellow travelers, one was 89 and another 88, the rest were lower. "

"Your service was good. Delivered correctly, picked up. Sufficient explanation about the operation. Maybe next time deliver the training schedule together with the device. That came a day later. The height tent allows you to adjust to the altitude from home. In 9 days we were at the top of the Aconcagua which is quite fast. Because of the preparation in the height tent, I hardly had any problems with altitude sickness, unlike others who had to give up because of this. "