Universal filament (net Auer) with special welts that allow you to match the shirt to most models of gas lamps. After setting the fire, the sleeve emits enough bright light that it facilitates navigation in darkness or provides optimal area illumination during the evening camping. Ease of use and the ability to adjust from the level of the lamp guarantee comfort and long service life.Principles of action: during the first use cotton threads burn, causing the decomposition of salt. As a result, around the burner is formed a special mesh cocoon, which makes white hot in a gas flame, emitting intense light. After switching off the supply of filament the fire goes out.