The 12kg kettlebell has the capacity of 12 - 13KG max when filled with sand. It is light, easy to transport (when empty), ultra resistant and it is a good alternative for a dumbbell.
The dry sandbag Featzone that it is included in this option.
Specifications: The kettlebell MAX is made in Cordura fabric with a 20 cm diameter length and the dry bag is made on PVC 500D tarpaulin.
Smart sand kettlebell
Read also warnings and user manual for more details about usage of materials.
For some training examples watch the video: