The 661 Comp Knee Guard offers the ultimate in protection with Polypropelene caps and a padded ventilated chassis.
These are great for DH riding, regardless if your clipped in or running flats. Pedal slap, crashes, and just flying debris don't faze you with these. When you crash the impact disperses nicely and you are good for another run. I thought the large was too long and decided to go with the mediums.
These pads are awesome if you need some serious protection. The only downside is comfort. I typically only put them on for DH or gnarly obstacles Im tackling for the first time. Cons would be: strap length and placement. I had to sew my straps shorter as i got the XL size because they were on clearance, so no complaints there. The straps just feel oddly placed at the back of the leg. Im ordering a pair of the evo's for everyday use.