One of my marathon friends is selling this portable bed tent and I told them I would pass it along on Slowtwitch. It is used but in good condition. Includes the high altitude adapter kit. This allows user to simulate altitudes higher than 12,000 feet. Works great for high altitude training for mountain climbers and athletes. Check out hypoxico's webpage for more details. Paid $6500 in the year 2000....$2100.00 plus shipping takes it.

http://www.hypoxico.com/home_sleep.htm