Features: 

• Non bounce design – designed for repeated slamming on solid surfaces
• Provides weight resistance through a full range of unrestricted natural motions – including throwing, swinging and rotation
• Sand filled ball prevents bouncing and rolling between slams
• Textured black vinyl surface provides grip and durability
• Helps increase core strength – works on abs, shoulders, back, arms and legs
• Improves flexibility, balance and reaction speed

Measurements: 

• 2kg slam ball – 10kg slam ball = 23cm diameter
• 12kg slam ball – 30kg slam ball = 28cm diameter
• 35kg slam ball – 50kg slam ball = 33cm diameter
• 55kg slam ball – 70kg slam ball = 36cm diameter
• 75kg slam ball – 100kg slam ball= 38cm diameter