My below knee length hooded rain coat from Patagonia from 25 years ago still keeps me dry and warm. It is not breathable but the 2 way zipper allows me to unzip from the bottom to ventilate or adjust for changing conditions and rider sweat output. No rain pants or booties used just requires excellent fenders and large and long mud flaps front and back.

This year to save some weight and bulk I am lengthening a Dri-Ducks rain suit jacket using the pants material and a longer 2 way zipper to mimic the benefits of the Patagonia rain coat. Not field tested as yet and not as durable but looks promising. Patagonia has not responded to my requests for the old rain coat design recreated in modern light weight materials.