It’s that time of year again where the “big” coat needs to come out! I use my scooter for dog walking, and I’m fed up with whatever coat I wear riding up and bunching around my middle! I prefer a longer length coat (keeps the bum warm), but, even my Trespass one with a 2 way zip managed to hutch up to the point my lower half is cold and my upper half looks like the Michelin man 
Any recommendations please from others who have a similar problem? I’m also on the larger size (18-20) so need plenty of room.
Many thanks in advance :)