Dumbbells are a piece of equipment used in weight training. They can be used individually or in pairs (one in each hand).
Dumbbells can be made of different materials such as neoprene, chromed steel or rubber coated steel and come in different shapes.
There are also adjustable dumbbells with easy, quick, and firm weight selection mechanisms. With selectable dumbbells, there is no need to purchase multiple pairs of conventional dumbbells, as it replaces the need to have 10 pairs of dumbbells.