Brian L.wrote a review of POC VPD Air Leg on April 7, 2019
Familiarity: I've used it once or twice and have initial impressions
The 4 previous reviews all hit the nail on the head. These are awesome minimalist pads. Exactly what I was looking for - enough protection for a spill here or there on dirt/rock and comfy enough to pedal in for hours. Bonus: The sleeve is long enough to slip over the bottom of my liners, ridding me of unsightly knee pad to liner thigh gap.
If you're looking for more bulk and protection, the Joint VPD 2.0 would be the way to go. I tried those on, but couldn't imagine pedaling in them for very long, especially on hot summer days.