POC is known for their protection gear. They cover the basis across two major outdoor recreation sports, biking and skiing, and with the focus on two sports and not 7, i think it allows them the time, money and research to provide quality products. That being said, this is a great pair of kneed pads, especially for the downhill enthusiasts. Even though, this is the VPD Air knee pad, considered to be their lighter duty knee pad, they still provide an abundance of protection, which is good and why we wear these things. They breathe relatively well, but of comfort and breathability are your main concerns, I personally would look elsewhere.
A few things that bothered me about these knee pads. 1) this is suppose to be POC's "light duty" knee pad. Well they are, but they aren't when you are comparing them to other like knee pads, say the Dakin Slayers, or Fox Launch. The POC really do provide great stiff, protectio, but they aren't that forgiving when it comes to pedaling, especially when you are climbing just as much as you are descending. 2) Don't breathe very well 3) only one strap, on top that grabs the thigh. I personally would prefer a strap that grabs the calf, or just right above it so when you are descending, through technical terrain, you don't have to worry about the pads sliding down your legs. most people legs get slimmer from top to bottom and the top strap is pointless once it loses its grip and begins to slid down your leg. 4) not recommended for long days in the saddle.
Now it may seem that my Bad may outweigh the good in this review, but don't get my wrong, I think this is a great pair of knee pads and POC is known as a industry leader in the protection market. But, when this is their light duty knee pad, and you are comparing to what I would consider, other true light duty knee pads, these are not at the top of my list. these get 4 out of 5 for me, as they are still on my shelf, and I will wear them on the days when I know descending > ascending but there is still some pedaling involved. ..but if you're looking to crank out 20-30 miles in the saddle, I would look elsewhere. Thanks for reading and feel free to ask any questions or address any of my statements above!