I can. I've been using 661 guards and armor for years. I have the EVO knee pads and have been VERY pleased with them. I got them this season to run under my race pants (since there is no shin protection) but have also used them with my shorts since. They aren't bulky-feeling; they fit nicely inside the articulated knee of pants; and, even though they only have one (top) strap, they stay in place better than almost any other guard I've ever worn. They aren't cheap (as you've found out) because of having the spendy d30 space-age razzmatazz shock-absorbing stuff but IMO they are worth it. I also like the the cutaway at the back of the knee, so that sweat can't get trapped there. I've had my share of guards that create sweat rash and chafing on the insides of my knees, so that feature is welcome.