• The slam 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
• Note: slam balls should never be slammed on the valve (air inlet) side of the ball, this can be achieved by holding the bal valve side up and slamming the ball down
• Package includes: 1x 15kg, 1x 20kg, 1x 25kg Slam medicine Ball