Not to defend a red top, but, no that is a puffa coat. Same as a puffa jacket but longer. It’s the little cells of padding. No idea what they call them outside the M25 mind you, but that’s a puffa, as beloved by barrow boys, market stall holders, working class people and even chavs that don’t want their cobblers frozen (or in the absence of cobblers, Bristol’s and jacks,) frozen off when it gets a bit parky. They are effective when it’s cold enough for brass monkeys. I believe they are so named as far away even as Essex.
