GoSun Sport is a high efficiency portable solar cooker created and sold via US based GoSun Stove. The GoSun Solar Cookers are innovative new solar cooking devices that are considerably faster, more versatile and lighter weight than most other existing solar cooking solutions. It was designed for developed markets, with a higher capacity and lower cost version currently under development for developing markets. Fast to cook, safe and versatile in culinary styles, this technology has a number of distinct advantages that make it a potentially disruptive innovation with the power to change the lives of millions still cooking with time consuming, dangerous, expensive and dirty fuels. Key to realizing the GoSun Solar Stove's advantages over traditional solar cookers is the use of a borosilicate glass vacuum tube as a cooking chamber. These vacuum tubes commonly used as solar water heaters on the roofs of building in the developing world, act as a large greenhouse vacuum flask, efficiently turning sunlight into usable heat and retaining it. When the cooking tray is filled with food is inserted in the tube, the heat is trapped, quickly cooking at temperatures in the range of 400 degrees Fahrenheit. The unit’s glass tube is made of laboratory grade borosilicate glass, popularized under the Pyrex brand name. These tubes are relatively durable and can be easily replaced if broken in both models.