Build muscle without wearing lifting gloves. Neoprene Dumbbells are covered in a synthetic rubber, giving them a cushioned feel for a comfortable grip so gloves are no longer needed. They are resistant to oil and sweat so you are less likely to accidentally drop them and are sealed off from moisture so they won’t rust like their metal counterparts. Soft neoprene weights don’t damage floors or tables. Keep all your weights organized with this Body Sport Rack. The rack comes with 86 weights.