Wide-handled kettlebell weights with flat bottoms Premium Versatile Fitness Equipment: Cast Iron Kettlebells for Strength, Conditioning, and Cross-Training Flat bottom with a unique design for stability Cast iron, trade name Neoprene Kettlebell, item weight 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 36, 40 kg, color blue, special feature Transportable, Non-Slip