Economy SDN4 Neoprene Covered Hexagonal Dumbbells by CAP Barbell - Buying your neoprene coated dumbbells by the set is definitely cheaper than buying by the single pair and CAP Barbell has configured each set into the most popular weights based on what customers ask for most. Each pair of dumbbells is completely encapsulated in brightly colored neoprene for easy identification in any group fitness area. Because neoprene dumbbell cores consist of a solid, one-piece casting they are considered "maintenance free". Their protective neoprene coating will not scuff floors or other equipment. Neoprene aerobic dumbbells are perfect for total body toning and strengthening, step aerobics, group fitness training, personal training, aerobic strength training, power walking, youth fitness instruction, physical therapy and rehabilitation. Colors by size: Lavender (1 lb), Pink (2 lb), Magenta (3 lb), Purple (4 lb), Lime (5 lb).