Dumbbell Weights can be used to exercise all major muscle groups including arms, chest, back, abs, legs & core. Dumbbells are perfect for training individual muscle groups or attaining a full body workout such as HIIT workouts & functional training. Built for safety and comfort, the CAP Neoprene Coated Dumbbells have an iron core and are precision dipped in 3mm of neoprene. Each weight showcases the poundage on each end.