PPP: Good pants for rock climbing

I have an old classmate who has recently developed an interest in rock climbing. It was a surprise because he was a very vain person that nobody could've guess that he would develop an interest in such an extreme sport. Though, i remembered he recently told me that his getting the 511 Tactical pants for his climbing expeditions; because apart from providing comfort, the pants also offers lasting performance, so he wouldn't need to worry about tearing his pants or injuring himself with scars or bruises while climbing. I guess no matter how much we had grown, somethings never change.