https://www.regatta.com/stormbreak-jacket-dark-olive/
Picked this up in the sales over Christmas for £5.95, proper throw back to the 90s raincoats. Nice nylon material and big hood. Would certainly recommend for anyone looking a cheap pick me up.
And plain enough to be worn outdoors as I am sadly conscious and have self awareness issues particularly when wearing raincoats as sadly they arent the norm despite crappy weather more often than not!