Neoprene Dumbbell Material:cast iron Available in 2, 4, 6, 8,10,12 LB Color:red,green,blue Environmental friendly Neoprene DumbbellMaterial:cast ironAvailable in 2, 4, 6, 8 LB Color:red,green,blue Environmental friendly Item Name Neoprence DumbbellItem NO LX703Material outside is plastic ,inside is ironHeight Weidth 2LBS 3LBS ---10LBSLength Color RED BLUEMOQ 1TON Plastic Neoprene Dumbbell