Endurance or trail stirrups are 4 3/4" wide and 4 1/2" deep (these are inside measurements) with a rubber, textured pad for super comfort on long trail rides. They have a 3" neck and can be modified to fit smaller stirrup leathers by replacing the bolt & cutting the spacer to size needed. They are made of a hard, very durable polymar. Colors available: BLACK or BROWN. Please choose color when ordering.