SETS OF 10, 15, 20 AND 25LBS KETTLEBELLS: This set includes 10 lb, 15 lb, 20lb, and 25 lb kettlebells to cover a range of training intensities; Build strength with this set that matches your goals. STABLE FLAT BOTTOM DESIGN: Our kettlebells feature a flat base for stability, suitable for strength training kettlebells workouts such as renegade rows, handstands, mounted pistol squats and other exercises.