Most modern player-distance irons (see out Goulf's ClubTest for coverage on every 2020 iron) include ultra-thin faces to increase ball speed and an interior cavity that is either left hollow to increase distance or filled with different materials to improve flight characteristics and/or feel. Other features include a deep groove on the face to assist in holding onto the ball during impact and a protruding toe tip to provide a more stable platform when hitting into wind or off the turf. Players' irons were introduced by TaylorMade in 1998. At first, they were only available in sets of four, but later came as singles. These irons were designed to be used by less skilled players who needed a certain amount of control but could not reach the back of the hole with their regular set of irons. They also proved to be very popular among touring professionals because of their small size and ability to fit in small luggage bags. Today, players' irons can be found in most price ranges. The main advantage of players' irons is that they are easier to hit long distances with. This is due to their smaller size and lighter weight compared to normal irons, which gives players' irons a longer swing path and more time to react to changes in the flight of the ball. Players' irons are perfect for shooting straight down the middle of the fairway or around the corner of the green.