I love L.L. Bean's hand warmers. I use them year round indoors when I go to a Casino. My hands are always freezing so I keep a couple of hand warmers in my pocket and use them several times to warm up. They work great and aren't so hot that you could burn your skin.
I also love L.L. Bean's service. They are fast and offer FREE SHIPPING. What other companies do that anymore? They are above the rest when it comes to customer satisfaction.
The Wicked Good Hand Warmers are great for snowshoeing in Alaska particularly when the temperature is below zero. Easy to get out of the wrapping. They warm up immediately. You don't need to shake. Still good from last season storage. I keep some in my car for emergencies. Also good to tuck in a sock and throw into the bottom of a sleeping bag during summer backpacks.