The Soto Windmaster stove is designed so the pot sits close to the flame, making it more efficient in windy weather. Results in increased efficiency so boil time is quicker and longer. The concave design of the burner head creates the effect of a built-in windscreen. The 4Flex pot support works for a larger pot, is available separately. An efficient stove for whatever size pot your adventure requires. • The Windmaster uses the micro regulator valve system • canister not included