One part kettlebell, one part sandbag, and all parts fun! Fill it with sand to get the most out of your strength training, cardio workouts, and bodybuilding exercises - fills up to 35lbs. Roll it up, pack it up, and when you get to your destination, fill it up to conquer your workouts on the go. This kettlebell sandbag is great for any fitness level and is geared towards functional fitness and conditioning on the move.