Piranha Gear Heavy Duty Leather Shin Insteps Thick, solid foam that doesn't limit you movement - they look really bulky, but they are so light, you hardly know you have them on High quality leather over super high density foam padding, they work for most styles of combat martial arts like MMA, UFC, Karate, etc. Though we wouldn't really recommend them for "on the ground" stuff or under the pants Sold in pairs because most people usually end up wanting TWO so we thought that would be a totally cool way to sell them