Slam balls are for overhead slams, rotational throws and conditioning circuits where a bouncing medicine ball would be a hazard. The fill is meant to dead-drop, so the ball stays where it lands on the floor.
Treaded Slam Balls run from 3 kg through 4 kg, 5 kg, 8 kg, 10 kg, 12 kg, 15 kg, 20 kg and 25 kg. Sets include a 12 kg set (3-5 kg), 30 kg sets, a 60 kg set, a 72 kg set and a 75 kg set (5-25 kg). The product copy describes a dense dead fill, a tyre-tread outer surface and a thick shell built for repeated floor impact. For a ball you catch off a wall, see wall balls.
Free delivery across Great Britain (Scottish Highlands and Islands included) is included on every order, heavy 25 kg balls and full sets included. How this kit sits in a room is covered in build a home gym.