I'm selling an altitude tent that I've used for only six months. There are still two years left on the warranty. I have a high altitude adapter that allows the tent to reach a simulated altitude of 12,500 feet, and an oxygen monitor so the exact altitude can be determined. The tent is a cubicle that fits over any queen size bed. I bought the tent new last year for $7000, right now all the equipment costs $7700, and I'm selling for $5300.