I guess you have to standardise for %age of leg covered by material - and I guess a good place is at the UCI rule. Having some of the fancy lycra socks you do have a lot of stretch in them so I don’t think it would have made a big impact. This was done at the Silverstone wind tunnel and I’m pretty sure they would have designed a good experiment.
I don’t know if the Silca sock is faster, but it is very comfortable. Just did a lunch time sprint workout…still go the socks on as I’m toolin’ around the office.
Are you faster when walking to the coffee maker? 
Emptied sock drawer and here is what I have for testing from left to right:
- May is Bike Month blue/grey sock
- May is Bike Month blue/green sock
- Classic Rock ‘Turn that Shit Up!’ sock that niece gave me for Xmas
- Beer sock that my sister-in-law gave me for Xmas
- Pearl Izumi pink sock to go with my Cycling Donut Warriors jersey
- random grey biz casual sock with ribbing
- random blue biz casual sock with ribbing
- black Gold Toe biz casual sock with ribbing
Now I just need a repeatable field test…
Agreed on all points!!
I wait in eager anticipation.
Same, and then I’ll set odds and accept wagers on the Classic Rock ‘Turn That Shit Up!’ socks taking the win 
How dare you! The sock has been that dude’s life work.
You can’t see aero.
(laughing emoji)
I get it…Just using your post to post the counter. You can’t see drag either. You can feel it but, not 5W+/-. It wouldn’t surprise me if these socks increase drag for many riders. The marketing on this stuff annoys me for some reason.
Josh has nice products but he could sell ice to eskimos. No offense to any Eskimo’s who may be reading.
Did you watch the video? That is what he claims at around 4:45.
Sorry to revive this with a semi-relevant question, but does anyone have a recommendation for an adhesive spray? Coming up short in my searches. At a pinch I assume a few strips of double sided tape would work?
A few mentions in this related thread:
For those who bought these, how are they holding up - pun intended - as socks? Forget the cost, would you buy these as socks? Any comparisons to other socks (not aero, just cycling socks).
Worn them a few times on the bike…aero claims aside, they are great socks. Soft feel, very comfortable, right height (not too high, not too low).
Would I pay $30 for multiple pairs? Nope…no chance. But as a one-off, they have been very good.
@GilbertsGrapes and @Power13 - thanks. I’ve been thinking of getting one pair for “races” (sportives, etc.) (more of a placebo probably than anything), but no reason for me if they don’t meet the “good sock” barrier
I use the rationale “I’ve dropped $30 on dumber stuff”…
I’d get a set if they had maybe some plain black or white.