Dumbbells are an essential addition to any strength training routine; Build muscle and improve core strength A convenient black dumbbell storage rack with 3 pairs of dumbbells in 3 lb pounds, 5 lb pounds and 8 lb pounds The hexagonal shape of the dumbbell heads prevents them from rolling when not in use Tone & Strengthen Dumbbells are an essential addition to any strength training routine; Build muscle, improve core strength, boost balance, burn more calories, increase energy levels, and more by using dumbbells in your fit