Originally Posted by TBM
Originally Posted by Grumpy2
Interesting read. What I can’t work out is do you wear it under another jacket or coat and on its own. The video looks like he’s wearing a different jacket on top but I’m not sure.

As it's biker kit it will be designed to go under a more 'protective' outer jacket.

I've been told in a car you really don't need anything over the top, this is another reason I chose a heated jacket as ultimately I wanted less bulk. A light weight long sleeve base layer is all that's needed under the Keis, apparently Merino wool is best, cotton is to be avoided as it makes you sweat while Merino wool breathes and insulates better too.

I've just bought these from Mountain Warehouse for £60 making them a very reasonable (for Merino wool) £30 each, they look nice and thin which is important.

https://www.mountainwarehouse.com/merino-mens-base-layer-top-multipack-p37066.aspx/navy/

It was explained to me for an electric heated jacket to work best, it should itself be close to the body, so I went with the size that was more ‘Fitted’, it was also recommended if I did want to put something over the Keis J505RP Premium Extreme heated jacket, the most I should consider is a lightweight and thin waterproof shell.

I already own an Endura Hummvee waterproof cycling jacket, I've just checked and it goes over Keis heated jacket perfectly. Even if it's not raining the Endura Hummvee is my go-to cycling jacket as it acts as a very effective windstopper, and because it's made for cycling Endura have given a lot of thought to breathability. It should prove ideal over the Keis when Morganeering through the winter months, especially with Monty's side screens off.

So, here's what I hope will prove to be the ultimate three layer system?

Layer One:
[Linked Image]

Layer Two:
[Linked Image]

Layer Three:
[Linked Image]

Each layer is as thin as possible, but the middle layer, the Keis heated jacket, is pumping out 78W of car battery powered heat. The arrangement is yet to be tested in anger as the weather is still quite mild, however, my early experiments prove the three thin layer system is much less bulky and offers way more freedom of movement than wearing a typical winter jacket in the tight Morgan cockpit.

I'll update everyone on comfort and performance when the temperatures properly start to fall.

Last edited by Montegue; 02/10/23 07:12 PM.