Arena sand is the sand you use in horse arenas and round pens. The sand is designed to be the best footing to provide traction and cushion for horses as they perform. It is also a critical part of the arena's ability to retain moisture and drain well after it rains.
Understanding Sand Terminology
Fines: tiny particles. Fines help materials compact but can also make materials dusty or dirty.
Graded: when sand is put through a specifically chosen set of screens to attain a specific distribution of sizes.
Evenly Graded: when most particles are within a limited size range.
Washed Sand: Sand is washed with water using special equipment, which removes some dust-creating fines.