This piece of equipment can track its origin back to central Europe and has been developed to its modern shape by Ivan Ivanov, coaching the US olympic team in wrestling.
It is manufactured by hand from canvas or leather and contains a filling of wool and sand, posseses a wide choise of grips and handles for different purposes and is made in five different sizes/weights.

Softer (and "kinder") than a Kettlebell the BTB can be use for a variety of swings and snatches and thrives when spunn around the head and torso of the athlet i the "Halo" and the "Spinn", providing excellent training for the muscles stabilizing our core and shouders.