Everflex cardio strike bag from Everlast. This Everlast is ideal for working with cardio and affects the low pieds-poings base. THIS IS NOT A HEAVY BAG. It consists of one large heavy duty PVC bladder to inflate, over which a envellope polycanvas high-quality that it is to ensure durability. The high density plastic base holds up to 29.5 kg of water or 43.2 kg of sand and offers a perfect bounc...