WOLON Speed Ball Bag for Punching Boxing MMA Reaction Training Suitable for MMA , fighting, boxing or daily training of reaction, accuracy, agility, endurance, etc. Durable speed bag with double stitched and reinforced with triangle seams. Inflated easily and punching comfortably without any air leakage With 7mm diameter thickness elastic rope greatly adding the service life High quality PU leather material makes the color bright and shining