We had no idea players weren’t already required to wear knee and thigh pads, but apparently they are currently optional. That will change in 2013 after the NFL passed a new rule.

https://twitter.com/#!/TraSPN/status/204971414837669888

It’s safe to assume defensive backs and wide receivers won’t be too happy to hear the news. Wearing pads will undoubtedly slow them down a bit and take away from their on-field swag.