HEX DESIGN - These dumbbell sets take up very little space and can be stacked anywhere without worrying about rolling, as a result of their hex shape. Interior is made of cast iron with a strong, matte finish AVAILABLE IN A VARIETY OF COLORS - Yellow, light pink, light blue, Orange, Green, Black NEOPRENE COATING FOR BETTER GRIP - Study Neoprene coating allows for easy grip and a non-slip texture so you don't have to worry about dumbbells slipping from your sweaty hands MULTIFUNCTIONAL Dumbbells - Neoprene dumbbells are ideal for power walk, group exercises, bodybuilding, strengthening muscles, alleviating stress, physical therapy and other general exercises Dumbbells WEIGHT SET RANGE - Incremental weights between 0.5KG to 10KG allow you vary the intensity of your workouts. Exceptional for step aerobics