Now it should be OK as you will have earmuffs to keep them warm.

in the warmer weather, lay a piece of First aide tape over your ear with the microwave transceiver in it.

[Pro bike race teams put a wired ear bud in, attached to a body pack radio,
and tape it in place, to hear the coach during the race, that way]

You will be microwaving your brain at the same time ,
but you would do that anyhow.