Air balls
Air balls are outdated golf balls with a hollow core in which trapped air made the ball lighter and fly higher.
The air ball belongs to golf's historical equipment. Early experiments with hollow or gas-filled ball cores were meant to make the ball lighter and fly higher. The idea: less weight at the same size means more lift and a gentler game for beginners. In practice these designs never caught on because they became unpredictable in the wind and lost distance. With the development of the liquid-core-ball principle and, later, the modern multi-piece balls, the air ball disappeared from regular play.
Today you will encounter the term at most in two contexts. First, as a historical curiosity in the story of ball development, for example next to Balata balls or hickory clubs. Second, colloquially for very light practice or foam balls with which you can practise your swing in the garden or at home without damaging anything. An example: you are training your Take Away and your swing plane with a soft lightweight ball in the living room, because it does no damage when it hits the cupboard.
A typical misconception: air balls are not an alternative to a proper ball on the course. They behave completely differently in the wind, barely roll and give you a false feel for contact and compression. For technique practice without a target they are usable; for a round or the driving range they are either not permitted or pointless. Whoever plays on ball feel is better off testing modern two-piece balls with a soft core — they are the true descendant of the original idea.
FAQ
Why did air balls never catch on in golf?
The hollow or gas-filled cores made the ball lighter, but unpredictable in the wind and shorter on distance. When more reliable constructions with a liquid core and, later, the modern multi-piece balls came along, the air ball disappeared from regular play. Today it is above all a historical curiosity.
Where do I still come across the term air ball today?
Usually in two contexts: as a historical chapter of ball development, for example next to Balata balls and hickory clubs, or colloquially for very light practice balls made of foam. With the soft lightweight balls you can practise your swing at home or in the garden without damaging anything.
Can I train sensibly with a foam ball?
Yes, the light balls are well suited for pressure-free technique work. You can, for example, drill the Take Away and the swing plane in the living room, because the soft ball does no damage when it hits the furniture. For strike feel and distance control, however, it does not replace a proper ball.