Portable Heating Pad 1 Pair Black USB Carbon Fiber Heating Mat 5V Electric Heating Film Heater Pads Heating Film Heat Pad for Warming Feet Knee Washable 35-50 ℃

Keep my battery warm while ice fishing. Cheap and reliable. Plug it in and forget about it.

I'm a deer hunter with chronic cold feet. I've tried silk liners with warm socks, changing boots in the stand, keeping my boots laced loosely, using those chemical packs for feet, I've even tried heated insoles.None of that worked, heated insoles a little. These babies you can slip into your socks with some adhesive Velcro, they get so hot I thought my feet might burn. I power these plus a heated shirt I made with 20-24k mah USB power bank. I use two power banks so I can rotate them between sits to charge.Downside of these guys? There is absolutely no retention from the main USB cable to the cable that goes to the sheet. So I duct taped them together. This morning one slipped out on my left foot, miserable morning.So I just duct taped it better.Anyway, if they would fix this, these things would be 6 stars.

The item does not produce consistent heat for both connected elements. I would not recommend this for cold environments. I was trying to put together my own heated socks on the cheap. I do not feel this was successful as the elements just didn't put out the desired heat on both sides. It seems like only one side will work at a time.

I have a set of these USB Carbon Fiber Heating pads that I put under my jacket and sweater when riding my ebike. I pair them up with a regular portable power bank. They are nice and warm when I ride. I thought I would have to buy something that would cost much more to get the value that these offer at such a lower cost. They are so easy to use. they are strong being made from Carbon Fiber. A great value product.

I had hoped to use these to put inside my handlebar poggies to keep my hands warm while riding. I installed them and plugged a 4000ma 2.1a battery pack and left the bike sit for 30 minutes. They were barely any heat and the battery pack was already down 2000ma and this without riding the bike into any wind. They'd probably be ok in shoes but would be very strange to have cables running up my legs to the battery pack.

No comfort for top of feet, below 30 degrees they do not provide much help

I put them in a hand muff warmer. Worked great.

Warmth anytime. Don't know how long they'll last but if they last at least the winter, I got my moneys worth.

works good they get warm enough and the wire is plenty long enough, The only thing I don't like is it doesn't have a way to set heat '' low med high '' So you plug it in and they start to get hot then you unplug them when your feet get warm,

Sirven muy bien cuando estoy sentada o acostada

平時に使うと熱すぎるレベルただ発熱量はそれなりにあるため、デスクワークなどで足が冷え切ってしまい物凄く冷たい足に使えるヒーター長時間の使用はおすすめできませんが、短時間に足を暖めるのであれば使える

These are too small to be foot sized - about 6 inched long by an inch and half wide - and they don't really warm up your feet. Yes, they do get warmer than room temperature, but only enough that it's noticeable.My recommendation is to buy something else.

calientan muy poco