LOFOO Sport Vinyl Coated Dumbbells 4 lb Pair Marterial: Vinyl Coated , Iron inner Total Weight: 8 lb ( Pair of 4 lb ) Dumbbells are an essential addition to any strength training routine. This good material dumbbell is great for indoor and outdoor workouts. The Coated surface provides for a comfortable and sure grip that won't slip due to sweaty hands.