The first sentence of the description is spot on! I rode for years without knee pads and as my riding got more progressive so did my wounds when it went wrong. I ride everywhere, on every kind of terrain, hot or cold. So when I finally decided to get some knee pads I didn't want anything bulky, interfered with my pedaling, had to breathe well in the hot weather, but provided me some protection. I've owned them for a little over a month now and I've used them on about 15 different rides ranging from XC, to good ole all mountain riding, to some gnarly downhill and they have done everything I was looking for a knee pad to do for me. They're light weight so they stay in place all day and do not to interfere with my pedaling, they breath well as not to be ridiculously hot, and best of all they protect you knee in the event of an unfortunate dismount. If you're looking for a good knee pad to wear wherever you ride, this is your pad!
For sizing reference since it wasn't an option in the pull-down menu of the review, I'm 6'4" 205lbs and I got the XL/XXL
I will state that I did not but these knee pads from backcountry as because of the aforementioned reasons I wanted to try on several different items and put them through the paces before deciding on a product. However, I purchase a ridiculous amount of product from backcountry and I value the reviews of those who use the gear when considering purchasing a product so here's my two cents on these knee pads.