Keis Heated Insoles Review

If like me, the cold stops you from riding your bike in the winter, the Keis S102 Heated Insoles could change your life! I suffer quite severely from Raynaud’s, but these beauties have allowed me to ride in temperatures below 3 degrees Celsius all winter – ideal!

What’s included?

For £69.99, you receive a box that opens to reveal a pair of insoles and a wireless harness. There are no controllers, no battery packs and no mains chargers included.

You need to choose insoles that will fit into your boots once you have removed the boots original insoles. These can later be trimmed to fit perfectly into your boot, but the closer to your size, the better. There are guidelines on the undersides to show you where to cut, should you need to.

  • Size Guide: Small UK 4-5 (EU 37-38), Medium UK 6-7 (EU 39-41), Large UK 8-9 (EU 42-43), Extra Large UK 10+ (EU 44+).

How they work

Although this will probably not apply to many of you, something to consider, particularly with older bikes, is that the insoles will draw about 1.3 Amp and typically power 15 Watts.

Essentially, you have to connect the first half of the power cable directly to your motorcycle battery. The cable terminates at a connector block, which needs to be positioned somewhere suitable on the bike. Mine is under my seat, with the main cable (which has a lid to shield out the rain) popping out from underneath.

There is another cable supplied, which splits into two and looks like a Y. The cable is uneven in length but this is because it is designed to allow for the fact that the connector block is likely to be positioned on one side of the bike. This cable runs down the inside of each trouser leg where it connects to the cable running up from the insoles in the boots. I placed the cables between the outer and inner lining of my trousers so that the cables would not disturb me too much. When you sit on the bike, you plug in the single trouser leg Y-cable to the connector block that runs to your battery.

Keis Heated Insole in boot
Keis Heated Insole in boot

It is actually very simple! Once everything is set up, as you do not need to remove the cables from your trousers every time you get dressed, all you have to do is plug each leg to each insole and then yourself to the bike, it takes about 1 minute in total.

Do they work?

I was shocked to discover just how quickly these insoles start to generate heat. Within seconds you start to feel your feet warm up and it is truly delightful. The insoles use micro alloy element technology for advanced heat radiation, which effectively allows the heat to spread evenly across your entire sole.

The insoles are also pretty comfortable. They are made from a rugged PU Foam with a moulded heel for durability and, you can barely feel the cables attached to them. I was worried that the connections to the leads (attached to the insoles) would dig into my foot or be very uncomfortable, but if you place these neatly in your boot, they are barely noticeable. The cables in your trousers are also not noticeable, so the entire system works very effectively in my opinion. With my heated grips and heated insoles, I did not want to get off my bike as I was so cosy and warm!

Keis Heated Insole
Keis Heated Insole

I would add however, that these insoles are not designed or suitable for long periods of walking. I have the feeling that this would eventually damage the wiring underfoot of the insole, preventing them of heating fully. Therefore, should you want to stop and go for a long walk, it is probably advisable you replace the insoles, which is not ideal.

One thing I did notice was that when my bike was heavily revved, the insoles were very hot! I wear thick winter socks but even then, the heat was so intense that I was scared I was going to burn myself and when I took my boots off, I found some sensitive areas. Baring this in mind, it might be handy to purchase the duty controller which allows you to control the temperature – this costs £29.99. You could also make your set up more comfortable by purchasing a rechargeable battery pack (£49.99) or a mains charger (£64.99).


Essentially, to keep your feet warm, you are looking at paying anything from the basic £69.99, to the complete package of £157.97. is it worth it to stay warm? Personally, YES. My poor circulation has not only stopped me from riding in the past, but has caused me great pain, where I am often crying in agony. This simple device has quite frankly eradicated all of this. I could not be more thankful!

Others may say that connecting everything up is a pain and that it is not worth it for short journeys. However, I find it so quick and easy, that an extra minute before I set off for any length of journey, means it does not matter. I would rather ride in comfort, than suffer a minute longer. 

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