Slow your greedy feeder down for better digestion and extended stable activity. Very small holes let hay or haylage out slowly and make the horse have to work harder and greatly reduces the amount of wastage on the stable floor. Longer forage time means less opportunity for boredom and inactivity. Mesh size: 3cm (1.25"). Small Red 30" long. Med Royal 39" long. Large Black 47" long.