The ad posted above (and again here) was captured by Dave Peterson in the brand achieves (Thanks Dave!). It was from SKI, Dec. 1973.
I agree it seems like it would be later after the Orange Astral Slalom boot but apparently they overlapped. I honestly don't remember that boot, but I was so happy with mine I probably just didn't notice.
I thought the Flo filled liner was a big step forward, at least for my foot. I had some foam injected Caber's before these. Never found happiness with them...
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