Super hydrodynamic 2.5 kg Lobster collar base.

The shape of this collar is designed not to overload the neck, distributes weight toward the balance point of buoyancy forces, allows hands to be joined above the head making swimming much more effective.

Segments of various weights and sizes can be assembled and fastened together in order to achieve the desired weight. Once attached, the segments, will follow the movements of the vertebrae without restricting the swimmer's movements.