Develop power, endurance, and balance with Sunny Strength NO. 066 Vinyl Coated Kettle Bell. Working out with kettlebells will sculpt and tone the entire body. Lifting and controlling forces the entire body specifically the core to work as one, building both strength and stability at the same time. Made out of high-grade cast-iron material, it is great for training indoors and outdoors. Whether you work out at home or at your home gym, take them wherever you go.