Kettle Bells are another great work out tool. Grab a hold of the handle on the 18 Pound AAA Playground Kettle Bell and get to work! The smooth molded handle is just like a solid steel handle and can be gripped with one or two hands. The kettle bell itself is made of rubber meaning that it will not harm floors. Because it is made of a safe rubber, the kettle bell is also great for group exercise. A wide variety of exercises can be done using the 18 Pound AAA Playground Kettle Bell, focusing on just about every muscle group, building strength and flexibility.