This MERACH adjustable soft dumbbell set converts between dumbbells, kettlebells, and a barbell, offering multiple training options in one compact system. The soft-coated design protects floors and provides a comfortable, secure grip. Adjustable from 4 lbs to 45 lbs per dumbbell, it suits all fitness levels. High-density soft material reduces impact and injury risk compared to traditional metal weights. An upgraded locking nut system with thickened threads prevents loosening during workouts. A textured anti-slip grip enhances control and safety. Ideal for home gyms, supporting exercises like bench press, squats, and curls.