Abstract: An improved warmer for feet [1000] is described. The device [1000] allows a person [1] to insert both feet [7] into the warmer [1000]. The collective heat of both feet [7] causes air to circulate equalizing the temperature warming toes [9] which are most sensitive to hypothermia. A rigid member [1103] holds an open end [1101] open to allow insertion of the feet [7] of person [1] without the need for person [1] to use his hands. Alternatively, at least one elastic band [1113] causes open end [1101] to conform to the boots [5] reducing the leakage of heated air for inside of the warmer [1000]. Warmer [1000] is well suited for use during hunting from a tree stand where person 1 is motionless for long periods of time in the cold.