The 15 kg dumbbell measures 36 cm in length and 15 cm in height. Due to its size and weight, the dumbbell enables a variety of strength training involving the muscles of the arms, back, chest and legs. In addition, thanks to its compact design, it does not take up much space in the home gym. The dumbbell consists of three materials: steel, rubber and cast iron . Cast iron forms the main part of the dumbbell, ensuring its durability and resistance to damage. Steel is used for the handle, which must be able to withstand heavy loads during exercise. The rubber coating, on the other hand, protects against damage to the floor if the dumbbell is accidentally dropped. Thanks to the use of these three materials, the product is solid, durable and safe in use. Thanks to the dumbbells, it is possible to perform a wide variety of exercises that engage different muscle groups. Examples of such exercises include, but are not limited to, bench presses, dumbbell curls and arm raises. With thoughtful a