DESIGN MATTERS: Made of solid cast iron core for reliable strength. The coating is easy to clean and reduces noise during workout. It will not damage the floors or other equipment. The fully knurled handles for maximum grip, provide you with a comfortable and secure grip on the dumbbell at any weight. MULTIPLE WEIGHT CHOICES: These dumbbells are sold in pairs and are available in 5 pounds increments from 5 to 100 pounds. So that you can vary the intensity of your workouts from any fitness routine to functional training. PREMIUM URETHANE MATERIAL: it exhibits good rust resistance while protecting your flooring and reduces noise on the drop. It also provides both long lasting result and high consistency with the dumbbell. DURABLE ODORLESS URETHANE FINISH: it gets the struggle many faces when seeking workout and lifting equipment that lasts; these solid steel tribell dumbbells feature the most highly durable urethane rubber finish to outlast your stamina.STABLE STRUCTURE, WON'T BREAKDOWN EASILY: urethane does not break down like rubber does from temperature changes or sunlight; A compact design for strength training, muscle development, fitness exercises and is great for home gym, fitness club as well as on the go use. COMFORTABLE ERGONOMIC GRIP: the knurled handles are designed to have comfortable grips whether you lift or train, providing you secure grips and optimal comfort during physical training sessions. MULTIFUNCTIONAL: For anyone who wants to build strength, burn fat, and create a shapely body, free weight training with dumbbells is more effective than exercise machines. For any multi-joint movement that targets major muscle groups of the body, such as abdominal, chest, pectoral muscles, biceps, triceps. Dumbbells are great workout equipment, Their compact design allows you to get a workout in spaces you can’t fit a barbell or weight machine!