Meet the GORUCK Sand Kettlebells: a set of soft kettlebells that can be filled with sand to reach your desired goal. It is made from 1000D Cordura with reinforced, double-pass stitching. It has heavy duty handle for your workouts. They are available in 6 sizes from 13lb to 53lb.
These GORUCK Sand Kettlebells can be emptied and folded up for easy storage. You can find out more here.