Materials are strictly selected, free of phthalate and lead etc harm contents to human. It is healthier and safer in your daily exercise Premium solid integrally cast iron inside with soft touch neoprene coated, no smell Textured surface makes it is easy and comfortable to grip, don't slip out when sweaty It has a bit flat to stop rolling away on the floor, easy storage The soft neoprene surface is superfine processing, easy to clean. Never fade or crack in your daily exercise Proiron neoprene dumbbells Proiron neoprene dumbbells for young people and seniors alike. Suitable both for establishing and strengthening all fitness levels, it is also well suited to cardio work and training. All materials have been carefully selected and are phthalate-free and lead-free. Not harmful to health. Proiron makes sure you exercise healthily. Pack includes: A pair of Proiron neoprene dumbbells. Please note: The black shelf in the picture is meant only to display the neoprene dumbbells.