I have a camo rain suit that is insulated. I usually wear that in the rain on my shadow.
I have been known to lay on the tank and put my feet on the passenger pegs behind me on long straight sections in the rain. I was down to 25 deg on my 65mile ride. Didn't have my winter gloves a pain of cloth gloves with latex under them. Had to stop 3 times to warm my hands up.
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