Great product at a great price. I have bought this product in the past , as well as the toe warmers, and they perform as described. Always carry a spare my pocket to be ready for whatever Mother Nature wants to send my way.
These are great...I get them for my daughter who loads FedEx planes in New Mexico in the middle of the night. She swears by them for keeping her hands warm...and, for hours when the weather is cold.
Of all the different brands of hand warmers my adult and teen-age daughters have used while skiing, these seem to last the longest and are a great value. They have skied in 30 degree weather and in 0 degree weather and the hand warmers are always still hot at the end of the day!