High quality aluminum stirrups with rubber grip tread and spring loaded outside release for safety. When pressure is applied to outside of stirrup, like in a fall, the side will open all the way up allowing the foot to be released. No way to get hung up in these stirrups.
These stirrups are great!! They have a great feel and with the rubber pads you have a very good grip. Heavy weight. I was skeptical, but they are indeed great stirrups. Just as any other aluminum stirrup, just safer!