The 12K line or protective equipment allows for maximum flexibility while keeping your protection levels at what you would expect from Reebok.
The 12K Elbow Pads allow you to play a very safe game with its JDP elbow cap. This functions by dispersing the force of impact with the boards or the ice away from the fragile elbow joint. The segmented foam and molded PE in the bicep and forearm keep you well protected from harsh slashes or hacks but move with your arms, allowing you to be 100% mobile.
The Fit Crossover lock strap system gives you a comfortable fit, taking away from that "itchy" feeling you may get from some elbow straps.
With this level of comfort, you can no longer blame your elbow pads for bogging down your game. Now you can praise them.