The Kathy Smith Advanced Kettlebell Solution includes a 10lb and a 15lb kettlebell to take your workout to the next level. You will experience toning, strengthening and weight loss. Kettlebell training is an old school exercise for all fitness levels that is now emerging into the mainstream. Many cite kettlebell training as the exercise that changed their bodies by sculpting, toning and burning fat. The Kathy Smith Kettlebell are sand filled with a soft outer shell that won"t scratch floors. The handle and kettlebell shape mimic the traditional kettlebell design with a large, easy-to-grip handle and a stable, rounded base.