Safety Works CTFM Toasty Feet Mens Shoe insoles Infused with Aerogel for Sizes 8-12

Very good

This is my 3rd pair. I still have the original pair, but I love them so much I’ve purchased them to add to other shoes. It adds a much needed layer between the frozen ground and the soles of my feet. Paired with wool socks and I’m able to keep my feet warm for hours at work.

These are a little misleading being called "toasty toes" as they reflect temperature, not generate heat. Best used in active footwear like hiking shoes that are used for walking in cold where properly insulated boots can't necessarily be used. I feel like most people who don't think these work probably don't understand their purpose. These are the best product for stopping and reflecting temperature transfer UNDER feet. They don't necessarily make cold boots warmer, or running shoes into winter boots, they can, and will reflect active heat back to your feet if you are generating heat from movement. If you stand on cold ground they will stop cold transfer well from directly below, but your feet will still get cold from poor insulation from boots like cowboy, leather, and rubber boots and these won't necessarily help when driving cold vehicles or light cycling (e-bikes) where your feet aren't really contacting or generating heat. They work very well for active movement in lighter shoes like walking in hiking shoes, where they reflect a lot of active heat back to your feet instead of transfering cold, where you can't wear a heavy insulated boot to walk naturally for longer distances. For sitting or standing tasks they will help insulate the transfer from below, but are not a replacement for properly insulated boots. There are insulated boots for all conditions including medical conditions like diabetes that require even more insulation, these insoles are not a replacement for that. These work well for more active footwear, where feet are actively generating heat and reflecting it back from below and not letting cold transfer in. They work extremely well when doing the specific job they are meant to do, which is stop temperature transfer under feet, not magically make feet warm like the name "toasty toes" implies and leads buyers to think these will somehow generate heat on their own, they will give you your own heat back better than anything available.

Like another review said, if you put these in your bike shoes for winter, they probably won't be better than the ones that came with your shoes. That said, they're not WORSE, so if you're looking for replacements because your old ones are shot, these are fine. But at -10C, they're really not doing anything special.

I had frostbite as a kid and have dealt with my feet and hands hurting anytime I am out in the cold for any length of time, I have pretty much tried everything out there, high end insulated boots with toasty toes foot warmers were about the best, I got a pair of gloves recently that have this technology and I was so impressed with how much better my hands were that I decided to try a pair of these, they worked really well, I have ordered two more sets for my other shoes so that I don't have to change them out. Highly recommended.

I don't review much but if it's a 10 I try to. I ordered this for my haflinger shoes that u have to wear heavy socks with and I ordered a whole size bigger, with heavy socks my shoes were still a bnm little big so I ordered this foot warmer soles cause I have cold feet like my mom, who was very healthy and liked t 97 but always had cold feet, I I used these and they kept my bare feet warm, which is a shock in itself, in the future of u used these u will need to size up in your shoes if u leave the soles in then, haflinger shoes has great arch supports so no way am I getting rid of those. It's why I buy those shoes, I will use a thin wool sock this winter and run errands but if your shoes don't have big arch supports, take them out and use these and cold feet says they will help keep ur feet warmer, such a good product that does what it says!