5mm neoprene bonded to a 4-way-stretch synthetic backing.
I'm done with scabby shins. I know, bruised and bloodied shins prove you're a hardcore deadlifter, right? And chicks dig scars. (Pro tip: Not attractive chicks.) But I'm over it. So I picked up a pair of these neoprene guards. RockGuards give you just enough padding to make deads, box jumps, Olympic lifts, and rope climbs less ouchie. Hey, your workout is supposed to hurt a little, but banging your tibias is distracting. That type of pain doesn't make you stronger, it just gives you a staph infection.
– Chris Shugart