Jammers

[Byron]

You're right (see Bobby Moore 1966) and I can understand why CD gets so frustrated with all the physiological excuses (it's like tv. commercials telling us that the use a certain brand of toothpaste is "technically proven" to "protect" our teeth and give them a longer life).
I am not such a Luddite as not to understand the importance of neoprene in the development of wetsuits for example, but we shall soon be hearing that the Nike swoosh on your trainers gives you just that extra edge in athletic competition!
(and the period you refer to was of course also a time when the boy racers loved to apply go-faster stripes to their cars).

On a practical note of clothing fashion, women's dress hemlines rose during WWII simply because the extravagant use of scarce materials was to be avoided.