Fox Racing Launch Pro MTB Knee Guard - https://amzn.to/2HMTI0C
I bought these knee pads about a month ago now and so far they have held up through more than a dozen or so rides. What sold me on these is that they have a built in knee brace for support. It doesn't sound like much but it really does help a lot. As you are going down the trail you feel sturdier and more in control. Definitely a must have for any MTB enthusiast!
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