Fitness Republic Vinyl Dumbbell Pairs - Combo These dumbbells sets take very little space and can be placed anywhere such as your home, gym or even your office Advantage: Unlike traditional dumbbells, neoprene dumbbells do not rust and have a smooth coating that makes it easy to grip and your weight lift workout a convenient yet effective. Made Type: Vinyl Dumbbells are made up of cast iron coated with soft and smooth Vinyl coating matte finish for a comfy-grip workout Vinyl dumbbell sets are just what the doctor prescribed comes to aerobics, light lifting at home, heavier lifting, bodybuilding and toning, strengthening muscles, relieving stress and reducing common aches or pains Various Combo options available