"Thanks again for the perfect service. The effect of the high altitude tent was phenomenal, in preparation for my expedition to the Baruntse in Nepal. Unfortunately, halfway through September I received the message that the expedition had been cancelled. Meanwhile, by sleeping in the altitude tent and through a good training programme, I had increased my VO2 max from 49 to 53. As a reference, the Col de la Loze, last climb of stage 17 of the Tour, I stayed (as a 61 year old) within the 150% of the time of the pro peloton. ???? Thanks and hopefully I can repeat this training and sleeping in an altitude tent next year for a new expedition to Nepal. Luc "

"Effect was positive. By sleeping in the height tent we managed to climb Khan Tengri (7010m) within 9 days. This certainly would not have been possible without the use of the height tent. We will discuss this in more detail soon in our blog. Furthermore, certainly good service. Informative and helpful, nothing to complain about. "