The Celsius Neoprene Dipped Dumbbell are a neoprene coated weight that has a comfortably shaped hexagonal grip that will suit most hand sizes. Colour Transfer Notice: Neoprene-coated dumbbells may transfer colour when exposed to heat, or prolonged contact with surfaces like wood, fabric, or light-coloured materials. To minimize the risk, follow these guidelines: Wipe down with a damp cloth and dry the dumbbells after each use Store in a cool dry place away from direct sunlight Store on a protective mat or non-porous surface. Avoid prolonged exposure to direct sunlight or high temperatures.