• The slam medicine balls are filled with sand with a very durable latex high density cover - they also do have an amount of air inside them
• Air valve on ball to increase density - there is no bounce to the slam ball as it is classified as a dead ball
• All balls are made at the same diameter
• We are confident in our quality and allow you to slam on the valve, where others tell you not to.
• Coming with 1 x 5KG Slam Dead Ball