This set of CE Level 1 knee armor from D3O has all the same benefits of this magical orangel flubber-like material. D3O claims their armor's molecules stiffen on impact, but remain flexible and comfortable during general wear. We can'd confirm or deny molecular claims, but they're definitely comfortable, they pass CE's impact testing, and we endorse them as a great option for a variatey of pants.
One of our favorite riding pants — the Rokker Chino — was designed specifically to use this armor set. The incorporated Velcro makes for sure and easy adjustments within the dedicated armor pocket. This knee armor will work with a variety of other motorcycle jeans and pants, too.