This is a high-end hypoxic machine that can simulate oxygen levels up to an altitude of 6700m. It's the MAG-30 from Higher Peak. I am also listing this on other sites, so I will remove the listing when it sells. This is suitable for those involved in endurance sports such as marathons, triathlons, hill climbs, and road races, who want to strengthen their blood through altitude training. It costs over 500,000 yen including shipping if you buy it new. The tent size is queen size. The included items are shown in photos 1, 2, and 3. Please prepare an oxygen concentration meter and other necessary items as needed. Please check the product website for other features. It will take about a week to ship. The price will increase by 3% after January 5th. #AltitudeTraining #HypoxicTent #HypoxicMachine #Marathon #HillClimb