adidas 3kg Dumbbells - strengthen, tone and smooth. Neoprene coated with a cast iron core, these 3kg adidas Dumbbells help strengthen and tone. An established training cornerstone, they are designed for both isolated and compound movements, allowing you to diversify your workouts. Featuring a unique hexagonal design, adidas dumbbells stay put once set down for added safety and ease of storage. Neoprene coated cast iron core Hexagonal design prevents rolling Ideal for both isolated and compound movements