CAP Barbell Neoprene Coated Single Dumbbell VERSATILE  Dumbbells offer the ability to target specific muscle group exercises or a full body workout CONSTRUCTION  Iron core made from ASTM A48 Grade 20 grey iron then precision dipped in 3mm of neoprene for safety and comfort FEATURES  Original Hex Shaped heads prevent rolling. The medium diameter handle provides essential grip and security during use. Neoprene coating is durable and protective FUNCTIONAL  Perfect for training individual muscle groups or major muscle groups, HIIT workouts and walking CHOICES  These dumbbell PAIRS are available in the following sizes: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, and 15 lbs Build Muscle Improve Core Strength Boost Balance Better Bone Health Burn More Calories Increased Energy Levels Enhanced Overall Mood and more!