DURABLE MATERIAL: PVC coating helps to eliminate the odor associated with rubber dumbbells, it is also rust resistant for long time usage; thanks to PVC coating, you can enjoy practicing without worrying about the floor and noise on each drop SOLID CAST IRON CORE FOR RELIABLE STRUCTURE: the cast iron hex dumbbell provides suitable assistance for strength training and core development; it will not bend or break after repeated use during long period of time HEXAGON DESIGN, RUBBER HANDLE: hexagon-shaped heads ensure easy use during sessions; they help prevent rolling and therefore offer convenient storage; besides, the contoured textured handle has ergonomic design for a firm but comfortable feel VARIOUS CHOICES FOR YOUR LEVEL: choose the right level from our wide range of hex rubber dumbbell, including 10, 15, 20, 25, 30, 35, 40, 45, 50lbs, which is sold in individual BUILD AND ACTIVATE MUSCLES: exercising with dumbbell is ideal for full body workout or targeting specific muscle groups; countless benefits including burning calories, strengthening bones, muscles, tissue, promoting coordination and flexibility DURABLE MATERIAL: PVC coating helps to eliminate the odor associated with rubber dumbbells, it is also rust resistant for long time usage; thanks to PVC coating, you can enjoy practicing without worrying about the floor and noise on each drop SOLID CAST IRON CORE FOR RELIABLE STRUCTURE: the cast iron hex dumbbell provides suitable assistance for strength training and core development; it will not bend or break after repeated use during long period of time HEXAGON DESIGN, RUBBER HANDLE: hexagon-shaped heads ensure easy use during sessions; they help prevent rolling and therefore offer convenient storage; besides, the contoured textured handle has ergonomic design for a firm but comfortable feel VARIOUS CHOICES FOR YOUR LEVEL: choose the right level from our wide range of hex rubber dumbbell, including 10, 15, 20, 25, 30, 35, 40, 45, 50lbs, which is sold in individual BUILD AND ACTIVATE MUSCLES: exercising with dumbbell is ideal for full body workout or targeting specific muscle groups; countless benefits including burning calories, strengthening bones, muscles, tissue, promoting coordination and flexibility