Originally Posted by
jefnvk
Cool, I learn something new every day!
Maybe I just need a speed suit that covers my entire body. I should be able to get a good 15-20 watts, if the average person gets 5-7

There is cost in moving the material - ex covering knees.
That kit with the POC helmet in post
#23 is the most aero junior has used, but someone is always testing in a tunnel something that does better.
The difference between different suits is a few seconds. The difference from them and a standard jersey is quite a bit. I guess at about 30 sec in 30 min for my kid. It depends on speed of course, but they do matter for rides against the clock.