I had my first DERBY in 1968 in navy blue it kept you warm. I grew up in Westlake in Daly City California and like Mark Twain said the coldest winner he ever spent was a summer in San Francisco so needless to say I had that jacket on almost year-round in Daly city. I have purchased two DERBY jackets recently and now I live on the East Coast and in the winter time the DERBY JACKET keeps you warm. It’s really the only jacket to buy!