A single-person hot-air balloon with an open seat rather than a conventional basket is called a cloud hopper.
A cloud hopper is a compact hot-air balloon designed for one person. Instead of carrying a separate basket, it usually places the pilot on a seat or harness directly beneath the burner and envelope. The pilot controls the burner and valve while seated in the exposed flight position.
The design is associated especially with Cameron Balloons, which developed the Cloudhopper as a simplified personal balloon. Its small size makes it more portable than a standard passenger balloon, although it still requires careful preparation, suitable weather, and an appropriate landing area.
Cloud hoppers should not be confused with inflatable amusement rides or powered ultralight aircraft. Like other hot-air balloons, they have limited horizontal control and primarily move with the wind. Their defining feature is the one-person, basketless configuration.