I raise small parrots and use these to provide warmth to baby birds. When wrapped in a cloth they give safe, even heat for hours. I have two and usually have to swap them out only once in a 24 hour period when set at medium. They are excellent for when I must bring babies with me on cool days. I've also used them for their intended purpose as hand warmers, during which they performed excellently. The highest setting is almost too hot to touch, so I generally use low or medium. I could never have imagined that they stay warm as long as they do! I've recommended them to other bird breeders as well as to friends who have chronically cold hands.

I love this gadget and feel it will be quite the game changer for the this winter. My hands are always cold and I'm constantly drinking tea to warm up. Now I have this convenient device to take on the go and give me warmth and comfort. It comes with a cute little pouch and and cord that makes it easy to carry around. I used it at an outdoor concert, and it helped keep me warm! Charges quick and easy, even in the car with a usb. So happy to have this!

I've tried something like this in the past, but I prefer the details on this model. Now, any time I walk my dog, I take this hand warmer with me. There is a wrist strap. I find it convenient because I need to move my hands a lot. The material is comfortable to the hand. I don't know how to explain it, but it just feels very nice to hold when it's warm. It's not hard plastic, there's a little rubbery feeling. The lights are clear. Red lights indicate heat level. Blue lights indicate charge level left. All in all, it has the little details that make me appreciate using it on a daily basis.