Gives better and longer heat than a competitor. A fellow actor used another brand and hers conked out after a few hours. Mine was still going strong with steady warmth for several hours.
My husband and I used the hand warmers while playing golf when temperatures were in the 40s and 50's. The warmers stayed warm and then hot for about 7 hours. I would recommend them for golfers, skiiers, joggers, and anyone with cold hands.
