Despite very warm gloves, I always have trouble in the sub-zero temps keeping my fingers warm when skiing. These are a god-send! I don't ski without them. Good price on the quantity. I really didn't need anything more than warmers rated for 7 hours.
I love this product. I train for marathons and ski in Colorado. When the temps are low I just throw one in each of my mittens and my hands stay warm. I use the Toasty Toes, too which work great for the feet in low temps. I put them on the top side of my foot on the top of my socks.
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