I got these pads because I did not have any good arm guards for Box. I play midfield outdoors and played with smaller arm pads, leading to incredibly bruised and swollen arms and elbows after box games. Got these and had no more problems. If you like the Cell 2 line, you'll like these,Pros:
Comfortable and great protection. The wrist guard part can also be removed if you want to use them for outdoors or find them annoying.Cons:
They can get sweaty pretty quick but its not a deal breaker.